I have received hundreds of great testimonials from people who have used the info on this site or trained using the jump science program. Initially I did not think to save them. Right now (February 2013) I am doing my best to dig up the ones I can find and will continue to add more to this page as I receive them.

Shout out to @filwtg for killing it on Jump Science 2.0! “Hey man I got my first dunk today and I just wanted to say thank you! Your program is the one that got me started over a year ago and your website gave me much of the knowledge I have today.. Big thanks ” “So when I first started around January 2017 I was on level 1 of the program and had a 24 inch vertical. I could barely touch backboard. Also my squat and deadlift were weak ( under my bw )After 6 months I increased my vertical to 35 in. Then I got injured and was out for 2 months. So I started with stage 2 so I could get back. Now I’m on the last weeks of stage 2, can squat 1.9 BW and my vertical is 38 in. I’ve noticed improvements in my speed, vert, and lateral movement.” #JumpScience

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“First of all I would like to thank you for the jump science program. I followed the program and got my all around athleticism up dramatically. I am a division 1 swimmer for University of Southern California and at the 2018 swimming NCAA championships I was part of a National Title winning 200 yard Medley Relay in which my split for the 50 yard breaststroke was the fastest recorded of all time. My gains in power through the program without a doubt helped that happen so for that I am thankful… The past 3 weeks I have been lifting very hard to get back into the rhythm of things again, so I was feeling very broken down by this morning’s workout from maxing my squats and deadlifts but I was able to do a 10’10” standing broad jump… I stand 6’4″ at 225lbs. At this moment my olympic squat is 180KG for a single, deadlift is 200kg for a single… standing vert was 37 inches…”

“Just tested Two step vert and improved 5 and 5/8 inches in three weeks and a rest week.”

“I’ve been doin that peaking phase you wrote for me and its working great I’ve got my vert up to about 38″ from 30″ without making any strength gains.”

“The 12$ I spent on the original program were among the best I ever spent because it not only made me jump higher but also a much better overall athlete. On the level I play on I hardly ever find someone that can match my athleticism

“I have been using Jump Science 2.0, and after completing Level 1 and the first phase of Level 2, my vert is up 6 inches.”

“In the past I had used your jump training program. I learned a ton about squatting form. While on the program I gained some significant boost to my vertical… simply by keeping my torso upright and knees wide like you recommended, I can now squat 325 at a bodyweight of 175. I can also pretty easily dunk a basketball. I’m 16 btw.
Thanks a lot!”

“Ht: 5’9” w/ shoes
Wt: 70 kg
Standing reach: 90″
Max running vert: from 30″ last year to 40″ so far
Ave. running vert: ~37″
Standing vert: 31″
Max squat: 116 kg”

Here’s a video of a 6-foot, 1-inch guy who gained 8 inches from the jump science program.

(1/2)”After stretching for two weeks and the first three weeks of lifting my improvement has been from 30″ to 33-34″… Keep in mind I’m almost 40 yrs old… My jumper’s knee is diminished daily now and only flares on hard workouts.”

(2/2)”thank you for sharing your knowledge, I needed that, my body was breaking down at 39. Now it looks like I can be stronger than at 25. I’m touching 11’4″ with an 8’6″ reach. Patellar tendonitis is on the run from stretching every day for 45 days and squat style changes.”

“I went from barely touching the rim, to windmill dunks in about a year. You provide great source of knowledge about athletic abilities”

“The Stretches and exercises he shows to avoid and/or recover from the jumpers knee are the best i had a really bad jumpers knee but 1 month later i didnt feel anything of it anymore. it now is 4 months later and i haven’t had problems with my knees since”

“You give some of the best information about increasing vertical jump in your videos man, congrats and thank you! I used lots of what you share in your channel to gain those 11 inches.”

“Just wanted to share a video with you. I was barely dunking when I started on program C four weeks ago. Here is how it finished:

Now I can dunk one handed with one step and two handed with my approach!
Thanks again!”

“I would just like to say that my overall Athleticism has increased so much since last basketball season due to your program and has now gotten me noticed by universities. It has completely changed my playing style for the better and has gotten me closer to where I wanna be and I thank you for that.”

“I really appreciate everything jumpscience has done for me. I started not even being able to touch rim, now I can hang two handed at 5’7.”

“I just wanted to thank you for such an in-depth and effective training program, not to mention cheap. My strength, explosiveness and flexibility have all improved, and I gained probably around 3-4 inches on my vertical after the first 3 weeks. I was always flexible and realized the importance of stretching but your stretches really hit the spot, especially the rectus femoris stretch. I was grabbing rim during the basketball season, but now I’m dunking and can’t wait to see how I turn out once I’m done the 12 weeks, and the expression on my teammate’s faces when I am throwing down next season. Will definitely recommend your program to my friends and colleagues.”

“just wanted to thank you for the site, after two broken ankles in 2 years followed by a broken hand i gave up getting back my jumping ability. in under one and a half months i gained over six inches on my vert and 25 kg on my squat. i can touch a spot at 10 feet 4 inches where as before on a good day i could get close to the rim.”

I have also been using your program for about 8 weeks now and am very happy with the results! I’ve gone from rim grazing off one foot to dunking off a two foot jump; I cant say I haven’t enjoyed being on the other end of alleys.”

This is a video of a Polish basketball player who increased his all-around athleticism using info from this site.

“yo jumptrainer I’ve been listening and doing all you exercises and its been working for me i went from a 14 inch vert to a 30+ “

“I started on level H and got my friend who has never done heavy lifting to do the program as well. It’s been almost 2 months now and I’ve seen a legit 6 inch increase in my vertical. My friend is 6’1″ and just dunked for the first time. We love these programs man.”

“daniel, I’m a fan and a member of Jump science 2.0 from Italy. In the left I was always lifting weights without recovering and without a well-structured program. In the right I’m in the 14th week of Jump Science (level 4) and three weeks without touching weights. THANK YOU.”

“in my opinion your site is one of the single most valuable and thorough resources available to any athlete in any sport period”

“I fixed my bad deadlift form thanks to your instructional and now it’s by far my fav exercise to do”

“Thanks to u Daniel I’m closing in on my double bodyweight squat not breaking out of form! Keep up great work! love vids and articles.”



“your program is just the best and only one thats working for me. I tried for years to increase my height, but nothing was working. I was always 5 inches under the rim, now after 2 month of FTF training I finally touched it. Thank you man!”

Chris is a friend of mine and a fellow sports training and fitness expert. He had a 28-inch vertical when he began training with me. He reached 38 inches after about a year of training with a few breaks and eventually reached 40 inches.

“since I’ve been doing your program, my vertical jump has increased by 10 cm….and I’ve been doing it only for 1 month”

“Hi Daniel,
Following an MCL injury I’ve been more or less following your program for 8 months now and have experienced great results. My vert had dropped as low as 29 inches coming off my injury but after carefully working through Level 1 and moving back and forth between Level 1 and Level 2 I can swing on the rim again (like I could 17 years ago), with my max full approach vert at 37 inches. I still hope to hit 40″ by 40 years old (3 years).
My flexibility had always been extremely poor so I addressed that early on as you recommend and never would have imagined being as flexible as I am now! Without your program I never would have been so dedicated to this task.”

“i purchased your program last year and my training has been on and off, but i’ve seem some great result following your program!
i couldn’t even touch the rim before, but now i can dunk it with a tennis ball lol
i’m currently 5’8 , 157lbs, squatting and deadlifting more than 1.5 times my bodyweight”

Tom is a friend of mine who decided to give jump training a try for a short time before he graduated from college and moved out of town. He’s a pretty good natural athlete and was able to earn some great results in a short time.

“I’ve been following You Daniel since your first movie on YT. I’ve gained a lot, broke a lot of rims with windmills thanks to you, but still working hard for my first BTL.”

“Hey coach Back, I have been following you on twitter and facebook as well as regularly reading your articles and theories on jump-science.com over the past 6 months to a year. I haven’t been able to complete your program yet but I incorporate your training into my regular basketball regimen. Specifically, I made strength gains in the past couple of months and just recently took so time off. Yesterday I went to the gym and I dunked 5 times, and I have not ever dunked in the past. I am 5’11 and weight about 180-185 lbs. Anyways, Just wanted to say thanks for the knowledge!”

“I’ve read A LOT, and out of all the sites and “professionals” I’ve been through and talked to, none of them compare to the information I’ve read on your site. Also, I’ve never made as much progress as I am, now that I’m actually applying the concepts themselves.”

“I increased my vertical jump 90cm so now I can hit the rim with my head!”

Al was a basketball player at my university. He trained with me for less than two months during the summer before his senior season. He made some pretty big strength gains and added about three inches to his vert in his first three weeks of training. The improvements he made stayed with him and helped him through the whole basketball season.

“I am also very thankful. I have used your videos as a learning device in my vertical training. Through months I have considerably increased my vertical and became more powerful. I wish you could post more training videos or dunks sessions. This is one of very few channels that has powerful information on vertical training. Thank you”

“I’m loving this program. I’m 31 years old and haven’t dunked since my motorcycle accident in 2009. In 4 weeks, I was already back to being able to drop step and dunk with 2 hands.”

“Just wanted to say thanks for the program. I’ve been on it a little over a month now and am seeing good results. I wasn’t expecting anything huge due to the fact I had already currently worked out pretty hard but the results are definitely noticeable. I went from dunking occasionally to dunking pretty easily off of 2 or 1 feet. I’m very impressed with the program and my increased flexibility has aided in my soreness, or lack there of lately and I’m loving that. Once thanks for a great program man!”

“Yo what’s up, got my first dunk last week! Unreal feeling. I just want to say thank you. There’s still a long journey ahead but there’s no shot I could’ve done this without you. You’re a phenomenal trainer and mentor and I appreciate you.”

“On a really good day I can dunk two hands with ease, throw down hard tomahawks, throw down alleyoops from whoever, toss it off the backboard to myself and dunk two hands, bounce it off the floor go up and dunk it down 2 hands, cock it behind my head a little bit and dunk it both hands so I’ve really improved with the variety of dunks I can do now compared to what I was doing in the past… I wouldn’t be even close to where I’m at now in terms of jumping ability if it wasn’t for you and your programs… I’m excited though. After this week and the rest week I go into the last phase of level 4. I’m hoping to reach the top of that square!!”

“Through playing volleyball and doing jump science, I now have my jump up to 30 inches and have been doing level 4 training… Thank you for all the help! I’ve made solid progress! Up 4-5 inches since starting in late April!!”

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“I have to give you so much props once again! I’m done with Phase 2B and during the rest week I participated in a 3on3 streetball tournament. Even after the tournament was over, and everyone was very tired, I still had enough explosiveness to grab the rim with both hands (I’m 5’10) !Guys who usually dunk easily were so tired, they couldn’t do that!”

“Since my last post to you I have put together a routine based on your videos. Last night I threw down my first dunk off of two feet. It just takes patience motivation and proper mechanics like you said. In a months time I’m pretty sure ill be doing windmills. I’m 6’0”. Ill post a video as a kind of “testimonial”. I really appreciate all your valuable information.”

“Here comes the very best part of all this. Week 1 I could barely jump and get any height. This was pretty frustrating because I was so explosive last summer before tearing my ACL so it was tough for me to see myself barely getting my fingertips above the rim. Ok here it is though I’m at week 8 now. I got my cast off monday so I tested my vertical tuesday. I went from barely getting my fingertips above the rim to throwing down huge one hand jams, and now if I stand underneath the rim I can jump up and grab the rim both both hands effortlessly. Also I can dunk off of just my standing vertical and the very best part for me was when I jumped up off one foot and threw down my very first two hand jam since going down last summer from my ACL and only one day from being out of my cast. That was just extremely gratifying for me to train even with a broken wrist and throw down a two hand jam the very next day on week 8. Words can’t even describe how happy that made me feel!!”

“Ok so I waited till Monday (yesterday June 6) to test my vert on the designated practice jumps day. I did my dynamic warmup (which I love doin btw gets everything loose and gets all my muscles firing properly) and I went to the gym after. I just started jumping off one leg and just glided to the rim effortlessly. So I did it again. Same result. I stood underneath the rim no steps jumped straight up and hammered down the hardest one hander off vert that i was ever able to do (my wrist was at least 4-5 in above the rim) I feel so much power in my lower body now it’s ridiculous. My legs are starting to feel like pogo sticks. Now that I’m able to explode up like that it gives me way way way more opportunity to actually dunk in a game. There wasn’t many ppl there yesterday but I got 2v2 going with these older guys. I spun straight around this dude baseline drove at the rack jumped up off one foot and just completely mashed it through the rim. I kinda felt like lebron on that play not gonna lie!! Both the dudes on the other team stopped playing for a couple sec and just looked straight at me like who the hell is this kid?!!! “

“MAN i had the WORST case of Tendonitis for almost 4-5 years im 19 now. and cured it completely in 3 weeks thanks to you. i could even grab my ankles. i was so unflexable. Watching your videos i can easily put my palm on the bottom of my shoes! And instead of pulling a wheight backwords i put a tredmill on incline and walked backwards and it worked! thanks so much. just needed to say that!”

“Thank you for the superb explanations on correct Squat technique. Very enlightening… Very helpful also, because they help me recover from a double knee ligament inflammation/condition”

“I did your program for 2 Weeks on a meniscus tear which I didn’t know at the time. My knee got stronger and I was back to dunkin. surgery next week, after I heal. I’m back on your program for sure, cheapest program out there and the best.”

“You are probably the best instructor out there. I’ve learned so much from your videos and articles. thanks man”

“I signed up to Jump Science at the beginning of the year and tried the program for a month and saw instant results (dunking became much easier).
I had to take a break for a while due to work but continued playing competitive basketball and did 1-2 of the level 1 workouts a week, seeing noticeable gains in athletic performance.
The combination of your upper body program (simple yet incredibly effective), combined with the Jump Science 2.0 program, has pushed my athleticism and most notably raw strength on the court to new levels and I’m finding I can absorb bumps and pushes and still finish at the rim with much less trouble than before.”

“When I first had the desire to jump higher in 2009/10 the only website that had free and 100% trustworthy information was yours – you didn’t charge ANY money for ANYTHING. You just wanted to help people out and share your knowledge with the interested athlete. Totally contrary to all the other webpages that seemed to only care about making money from their products.
So I started to read your articles and watch your videos. I began with a LOT of stretching first, since I was the most inflexible person out there, and started seeing gains from just doing that. I dunked for the first time at the age of 17.
After an ugly foot injury in 2012 (at the peak of my athleticism back then) I focused my training on gaining muscle mass (73 kg in 2012 -> 88 kg (clean) 2014). Still I never neglected the vertical jump and can now humbly say that today (at 20 years old | 6’1) I am stronger, faster, more athletic and jumping higher than ever before. Thanks to the free information from your website I’m able to perform a two-handed dunk off a drop-step from a standstill and hang on the rim afterwards with ease. Also I trained a few people in my area and everyone in my gym wants to train legs with me now. You are the #1 reason for this! Thanks a lot!”

“I just want to shout out a quick thank you for all your work. I was struggling a lot with jumper’s knee as a sophomore in high school which led me to your web site (freetofly then). I ended up buying your workout materials. Ever since I encountered your site, I have learned so much and have been blessed to see gains because of your program. On top of that, I have seen jumper’s knee virtually disappear. I will be a freshman in college this fall and I plan to sprint on a D2 track team. I have to give credit to your work and knowledge of athletic training as major contributors to the things I have accomplished athletically. Most of all I give credit to God who fashioned and sustains our bodies to his service. So thanks again for all your work and for giving glory to God. Keep it up!”

“I have been using Daniel’s stuff for a while now and it’s awesome. I can only recommend it. Compared to many other coaches, Daniel actually cares and helps you as good as he can. Whenever I had a question, I emailed him and his replies were fast and detailed. I still have a lot of work to do to get where I want, but the coaching materials work and I have seen lots of improvement in my vert, speed as well as overall athleticism. Thank you Coach Dan and keep it up!”

“The difference between you and all the other vertical jump trainers is that you don’t only give out workouts and stretching videos, you really want people to learn about the science of athletic training and be very educated in the area for their own benefit. I can’t believe how much I have learned from you about training my body to be a way better athlete. The principles such as time off and a peaking phase were so crucial to learn and no other trainer would have allowed me to learn these things by just handing out work outs. You really are the best at what you do and I would believe 100% of any and all information that you have given me.”

“Hello Daniel!
I have to thank you for everything.. your site your program and your personal help has brought me further than ever and I’m so thankful.
Last year I was squatting 140kg thinking if I get stronger this automatically means I’ll be faster.. what a mistake
I was struggling to go under 11.8 which I was doing on the regular when I was 14.
That was before strength training. But then I stumbled upon your site and everything became clear.
I stopped weightlifting and concentrated on my technique and getting fresh over this winter. The result?
My 60m improved from 7.29 to 7.08
And just last Sunday at the youth European championships I run a pB of 10.94..
I feel so fast and fresh and so much more powerful. Your weightlifting philosophy is truly amazing.”

This week is my rest week and I’m about to start the peaking/final phase next week. I don’t know why but people are starting to notice my new found athleticism on the court especially after I jumped over guys 6 inches taller than me for a rebound(5’8). Also finally deadlift more than my squat. Deadlift Max went from 205 to 275 and Squat went from 225 to 255. Before the program, I had very weak hips and butt and was quad dominant. Now I’m balanced. With this program I was training way smarter with the way I lift (going perfect form light then building up throughout the sets). The past program I did, VertFreak, improved my vert but I didn’t feel like it gave me much athleticism (got abs from it but w/e). With this program, my speed, quickness, strength, and explosion really took off. Some of the exercises may seem weird at first such as the 1 leg deadlift/close grip hang snatch/overhead squat****** but I feel like it really strengthened my muscles that were really weak and inflexible. I’m testing my vert this Friday to see how much I gained and if it’s good I’ll send you the video. I took a gamble with your program. I remembered when I first encountered your website and read most of the info and watched your videos. I knew there was something different about you compared to other vert experts. Well it payed off! I’m about 3-5 weeks away from the 3 week rest so I’m sure it will be even crazier then. Hard, smart work payed off!”

“I wanted to drop in and congratulate you again on what masterful and impeccably helpful material you’ve created with Jump-Science. I must admit that through your training regimen I was able to make more progress than I could appreciate at first, and because I got carried away I developed a serious case of Jumper’s Knee.
From all of the things I read (Web MD, sports medicine websites, etc) it was “stage 4; requires 6 month’s physical therapy or surgery to correct” (I could not support any weight at all on a bent knee without excruciating pain!) I turned instead to your article on Jumper’s Knee. Simply pointing my toes outward to correct knee valgus allowed me to start with sled drags, and I could navigate down stairs backwards. These 2 exercises alone were all I needed to get my foot in the door in terms of beginning recovery, and in one week flat I am happy to report that I can not only do squats again, but I can stair bound and even jump with no pain whatsoever. I am beyond amazed; thank you!
I have been spreading awareness of your program for the invaluable boost in athleticism alone, but now I have a whole new reason to make others aware of your incredible program and knowledge. I wish you all the best, and if there’s ever anything I can do for you please don’t hesitate to let me know.
PS in December I filmed a new video showcasing my newly acquired athleticism, and a friend of mine put it together and published it for me with the Jump-Science url (unfortunately he did not edit it with a long enough pause.) In regards to the footage, it was the first time I’ve ever been able to put all of my most difficult tricks together within the same session at all, let alone with such ease; each clip (including the last few which are by far the most difficult) was done in a single take. Again, I am ecstatic at the gains I have made thanks to you!”

“Ever since I was young I wanted to be a great athlete. Doesnʼt matter if I was playing pick-up basketball with friends or contending for the state football championship; if I was competing I was competing to win. In high school, I always felt I possessed strong athletic ability relative to my peers, but never did much training to enhance that ability. I competed solely using my God given athletic ability and saw success in my sports of football and track. When I got to college, I thought this same mentality would deliver similar results. To say the least, that first day of collegiate football practice was a rude awakening. Everyone was simply bigger, faster and stronger than me. After camp, I decided to “red shirt” for my freshman season. So for that whole year I lifted with the team and saw some strength and mass gains, but nothing overly special. In spring, I competed in a track meet hosted by my school and ran a 57 second 400m hurdle. An average time, but it was enough to pull me toward track. The coach was impressed and wanted me to follow the track team lifts for the upcoming summer. I followed the program all summer, but was slightly surprised to see some of our lifts. We were doing 50-60% body squats right during the middle of summer. Now I did not know much about lifting, but I did know summer was time to make significant strength gains for the upcoming year. I simply could not see myself improving considerably with these lifts. Sure enough when the same track meet occurred the next year; I ran the race in 56 seconds, only 1 second faster! I trained hard for a whole year only to increase my personal best by one measly second. After that race I knew something had to change.
That summer I started training with Daniel; after seeing significant gains within the first 4 weeks, I decided to commit to training with him for the upcoming year. It has been just over a year now since I have switched. I saw more success this past year than I have in my whole life. My strength, power, explosiveness, and speed have increased drastically. However, I am sure you want to hear real life examples, so I will tell you about my past track season.
I set personal bests in everything I did! During indoor season I competed in the heptathlon, outdoor season I ran the 400m hurdles. A heptathlon consists of: 60m dash, 60m hurdles, long jump, high jump, pole vault, shot put, and 1000m run. My 60m dash dropped from 7.70 to 7.20 seconds; 60m hurdles 9.23 to 8.60; long-jump increased by 2ft, high-jump I went from 5ft to 6ft; pole vault went from 12ft to 13ft; and shot put I went from about 28ft to 37ft. On my very first heptathlon ever, I nearly qualified for nationals. If you think my indoor season was eventful, just wait till I tell you about outdoor! You know that meet where I initially ran the 400m hurdles in 57 seconds, then 56 the next year; well this year I ran it in 53.15! I PRʼd by over 3 whole seconds, and qualified for the national meet. I ended my season top 20 in the nation, where the year before I was not even top 100! This past year speaks for itself, this training works.
Many people think they need to enhance their sport specific abilities to see significant gains. For example, sprinters put tons of work into perfecting their block starts, which may be the single most important part of their race. However, you can have a perfect block start, but you will always lose to someone who has a perfect start AND is stronger/more explosive than you. When you already have great technique, the next step is to improve your overall athleticism. Be a stronger, faster, more explosive athlete on top of having great technique. That was what Daniel’s training did for me; I became an overall better athlete and naturally it carried over into my sport. Leave your sport specific training to your practices, and use the weight room to build strength. I have two more years of eligibility left and cannot wait to see what kind of athlete I am then. Thanks for everything Daniel!”

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