Tennis takes care of everything. It requires agility and quickness to get to the ball core strength to get power into your shorts and stamina to last for an entire match. In addition to toning your arms and shoulders it's a total body workout for your legs and abs and works your heart and core unlike any other sport.
I kinda see my current position like this: Here's your five minutes in the toy store so you gotta do all the good movies you can before 'Chuck Woolery' rings the bell.