hills

The worst endurance exercize ever. I seriously can not think of anything worse. Usually done on foot but can be applied to biking as well. Basically your coach for whatever sport will take you to a steep hill on a nice hot day (he won't do this unless its at least 90 degrees) and tells you to run your sorry ass up and down the hill some ludacris amount, always above 20. Someone is guarenteed to throw up with at least one person being hauled out in an ambulance. This sick twisted workout gets you endurance up but when your doing it you would rather die.