You walk into the cardio section of your gym and —shocker — all the stepmills are taken. Luckily, you can do this 20-minute stair workout right at home. Learn more in this page.

You walk into the cardio section of your gym and —shocker — all the stepmills are taken. Luckily, you can do this 20-minute stair workout right at home. Learn more in this page.