Want an exercise program that helps you work out smarter, not harder? You've found it. The Women's Health+ Ultimate HIIT Challenge is a week-long program that combines high intensity interval training ...
The 25-7-2 Stairmaster workout is the next 12-3-30 workout. You heard it here first. In the same way that the 12-3-30 trend uses just one machine, so does the 25-7-2 workout: the Stairmaster, and ...