Exercise - what's in it for you?  There are three ways to be "fit." First, activities that involve running deliver oxygen to the body. Backyard games like "tag" involve running. These are good for growing a strong heart. Second, improving strength can be done by doing push-ups or hand-stands. Playground climbing gyms are fun and help make you strong. Finally, any kind of stretching improves flexibility. Just bending down to tie your shoes helps. In short, get outside and play games with your friends. You'll be exercising and having lots of fun!