Train to Resist Life's Forces.
Increase Your Force Absorption Threshold.
Have you ever hiked down a mountain, skied moguls, or walked down the stairs? All of them require resisting force to do well.
Studies now show that training your body to absorb more force is the most efficient way to train. This can result in muscle regeneration, higher bone density, and better tendon strength.
All-In-15 trains to increase our clients' Force Absorption Threshold, and, as you can read in our reviews, their quality of life improves dramatically.
So the real question is:
Why train to create force when you only need to resist it?
John Hecker, CSCS
John Hecker is the founder and co-owner of All in 15 and is proving eccentric training is safe and the superior way to build neuromuscular control. John attended and played football, graduated from Colorado State University with a Health and Exercise Science degree, and holds the Certified Strength and Conditioning Coach (CSCS) designation. John is a savant in the eccentric fitness arena and is passionate about helping his clients be the best in what they do and live better lives, from professional to collegiate athletes, to clients with Parkinson’s disease, to people who don’t have enough time to workout. John’s system has exponentially benefited everyone who works with him.
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Client Reviews
"The best results in the least amount of time."
“I recommend All in 15 to anyone and everyone looking to get stronger in the most efficient way possible. As a father of young children, I don't have hours to dedicate to a weekly workout routine. For the last two years, I've worked out with All in 15 once a week and I continue to get stronger and feel better while maintaining mobility and flexibility. My health and wellness depends on All in 15. There is no comparison to All in 15 because it provides the best results with the least amount of time commitment.”
— Derek H.
"60 years old & feeling younger!"
“The combination of cutting-edge, scientific workout equipment and John's expertise as a personal trainer has not only slowed the aging process (I am in my 60s) but has restored and improved my core strength and balance.
Until I experienced the workout and the positive results, I could not have been convinced that working out for a few minutes once a week was a feasible reality for fitness. Now, almost two years later, I am a firm believer.
You will be, too, if you sign on and stick with it.”
— Luke H.
"Getting Stronger & feeling great!"
I learned about All in 15 in Boulder at a Wedding. I am 65 and it sounded way too good to be true. I did my intro. workout that is totally free and figured I had to at least try this for a month. I have been with John since 9/8/23:). I was cautious of knees, shoulders, back etc. as we get older. Let me share, he is always watching my form! I have been to a class where he explains the program in more detail. All I can explain is I am getting stronger, feeling great, learning more about my body, see John once, yes, once a week for 1/2 hr. I am happy to be blessed with this opportunity of a new technology and it works for all ages. Highly recommend you stop in for a trial.
— J.R.
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