I play NCAA D III Tennis in Tennessee. I recently bought your Tennis book and have been following very closely. So far the book has done wonders for me. Not only have I increased my speed on the court and "amped" up my serve, but I am now able to "last longer" on the court. I feel like this book has given me the strength to play 3 plus hours of tennis each day at the highest performance level.
I've been using your tennis book for the past month or so, and I must say, this book has remarkably improved my performance on the court. Fatigue has disappeared and the power and agility I now have while playing the game is incredible. My one-handed backhand that was once a weakness, has become a blazing weapon. Ground strokes are more powerful than ever and my serve just kills. I maintain the same amount of intensity at all times, start to finish thanks to the endurance training in this book.