- Rapidly improve strengthRapidly improve cardiovascular fitness
- Increase speed
- Maximize calorie burn during the workout
- Set new fitness goals – then smash them!
- Put your metabolism into overdrive, burning calories for hours after the workout
- Forget hours of training – 30 minutes is all it takes
THE SCIENCE BEHIND LES MILLS GRIT
There’s no disputing it. It’s scientifically proven that LES MILLS GRIT works. HIIT cardio training drives you to burn calories for hours after the workout, increase aerobic fitness, unleash fast-twitch muscle fibers and grow lean muscle tissue, burning fat. But don’t take our word for it, read about why HIIT works here.