"My son is 12 and I have used some of the teaching of the Hitting Performance Lab are posting on here and my son hit the ball over 280 feet several times already in the game, not just practices, and also hit the fence on the fly on 300 feet field, so what this guy is teaching works, a least for my son...He weighs about 110 now but, what I have noticed is how consistent his power has become thank you so much for your help, I played 10 years of professional baseball, and I wish I could of used some of this advice." - Sandy Arecena This book is where Bill Nye the Science Guy meets Babe Ruth....