13 Interval Training Workouts That Change Your body-SliderPhoto


1. CrossFit
CrossFit is an interval training program developed by Coach Greg Glassman using his equation: CVFM @ HI + Communal Environment = Health. Or: A regimen of constantly varied (CV), functional movements (FM) performed at high intensity (@HI) in a communal environment leads to health and fitness.

2. Tread & Shred
Tired of long hours alone on the treadmill? There’s a new class being offered in gyms that can help you stay focused and get fit. Trainer Jay Blahnik is the creator of the increasingly popular Tread & Shred offering treadmill interval training in a class setting.