Interval training is incredibly effective because it revs up your resting metabolic rate. This means that the amount of calories you burn at rest is elevated even after you’re done. You’ll enjoy the fat-burning benefits for up to 24 hours!

This interval challenge is specifically designed to target your core. A strong core is paramount for many exercises. From yoga to running, strong abdominals help you maintain good posture and avoid sports-related injuries. This 7-Minute Flat Abs Challenge is designed to give you a tough core without taking hours at the gym.