Played college football ruptured Achilles, broken hand, torn shoulder labrum, Concussions. No doctor could help me and my mind and body were deteriorating and getting worse. After years of searching I found this mat and after only one session I could feel tendons tingling and blood flowing. My mind was clear for the first time ever. After 3 nights my shin splints that have been plaguing me for years are completely gone. As a bonus, after sleeping on it I wake up with hard on every time. That wasn’t happening before. I’m a believer. Great product for athletes.