tennis's also very energy consuming and what's more -- i tanned in the sun.. im a green hand yet, so most of the time, i practice playing tennis against wall, kinda like squash, haha
haha i use tennis ball to training my left hand by throwing it to d wall n catch it using left hand oso ,my right shoulder has b injured so cannot holds heavy thgs n raise up my hand in longer time (writing oso) so i nid to train my left hand