A simple exercise that anybody can perform at home or the park is called Stair Sprinting. The name is pretty self explanatory. All you have to do is run up and down the stairs between several floors; the more floors, the better off you'll be.
It's a good idea to start small, even if you're in a good physical condition. Run up and down four floors two times. First timers and overweight people are unlikely to manage more than two reps anyway. However, it's no big deal if you can't do more than two reps in the beginning. Resistance to effort is built in time. Do the two reps every other day for two weeks.
After two weeks increase the number of reps to either three or four, depending on how you feel. If you can take four reps up and down four flights of stairs, then by all means do so. If you can't, then stick to three reps. As the weeks go by, you can add even more reps to your routine in order to increase your endurance and to really put the muscles to work.
This exercise is perfect for the legs and ass. Ladies and gents looking to build shapely asses and strong thighs ought to try stair sprinting. Having to carry your own weight up the stairs instead of flat terrain puts more stress on the muscles and helps the feet gain more endurance. However, be very careful when doing this exercise. Running up and down the stairs makes it very easy to trip or miss a step and splay an ankle. Even more serious injuries might happen if you're not careful enough.
