In conjunction with researchers at PennState University, we tested two groups of 42 fit adult exercisers. Both groups did five hours per week of excellent, professionally designed exercise.

Group 1 did three hours of cardio (either BODYATTACK™, BODYCOMBAT™, RPM™ or BODYSTEP™) and two 60-minute BODYPUMP™ classes.

Group 2 did exactly the same routine except it substituted one 60-minute cardio session for two 30-minute LES MILLS GRIT™ Series workouts.

After six weeks Group 1 achieved excellent results, recording marked increases in oxygen consumption and strength while decreasing triglycerides, decreasing body fat and reducing waist circumference. Group 2, who did the LES MILLS GRIT™ Series workouts, enjoyed the same benefits but on a much grander scale.


Grit results table

It's the science behind LES MILLS GRIT™ Series that delivers the results.

Excess Post-exercise Oxygen Consumption

Otherwise known as the EPOC effect will help you burn calories even after you've finished working out. To learn more about this, and how LES MILLS GRIT™ Series provides the EPOC effect, check out this video. 


Growth Hormone 

Stimulating the production of growth hormone is the secret to changing the shape of your body, fast. Check out this video to find out how LES MILLS GRIT™ Series will make this happen.


Slow Twitch Muscle Fiber  

Whenever you exercise you engage your slow twitch muscle fiber but if you want maximize your workout you need to unleash your fast-twitch muscle fiber - and that's where LES MILLS GRIT™ Series comes in. To learn more creating muscle definition using both slow twitch and fast twitch muscle fibre check out this video.