Hello to all
My little sister just joined the tennis class last weekend. And she is preety going good at the moment. But this week she is loosing her stamina. She is taking diets, but she cant practice even after playing 20 min non stop. I am worried about her. So Here i am to look for some suggestions, site links and information. I hope these links has some power boosters or something like that.
In anycase if any one has any suggestions I would really love to see..