Originally Posted by TheCheese
I find it hard to believe that you could make much noticeable difference working out for only 5 days.
i believe it. Hes using isometric bands. I've coached soccer and I have my players train with them and there is noticable improvement in their mile times within a few days (3 days) and they improve more and more as more days pass. Have you ever tried to bounce a volleyball with a tennis racket? Just bounce it against the ground. Then play tennis, huge huge difference as now you can slam the heck out of the tennis ball.
@marina: do not work out before playing tennis MATCHES. I wouldn't even recomend the volleyball bouncing technique because you will be messing up your muscle memory slightly. However, practice is fine