Not in professional sports, see http://www.amazon.com/Faster-Higher-Stronger-Generation-Superathletes--/dp/1594631530/ http://www.amazon.com/Faster-Higher-Stron

Not in professional sports, see http://www.amazon.com/Faster-Higher-Stronger-Generation-Superathletes--/dp/1594631530/ http://www.amazon.com/Faster-Higher-Stronger-Generation-Supe... or http://www.amazon.com/Sports-Gene-Extraordinary-Athletic-Performance-ebook/dp/B00AEDDQKE/ http://www.amazon.com/Sports-Gene-Extraordinary-Athletic-Per... (similar ideas in both books)