What are you trying to accomplish? This is a big category -- you can do a ton of things at home, especially if you buy some equipment. If you're wealthy you can build your own gym at home. You can buy a stationary bike or elliptical machine for the home. You can do yoga, pilates, calisthenics, push ups, crunches of an incredible variety. So given you can do so much at home, the question would be, what is it you're trying to accomplish.