The 28-Day HIIT Challenge – Day 6

Each set in this workout is engineered to work as many muscle groups as possible, super-charging your metabolism. Remember form is especially important – quality trumps quantity! Sprint Cross-Country Seal X-Jack Mountain Climber Squat Reverse lunge Squat Jump Jump Lunge Power Knee Burpee Tiger Push-Up

The 7-Day HIIT Challenge – Day 7

Sprint Cross-Country Seal Power Knee Mountain Climber X-Jack The Mummy Reach Burpee Squat High Knee Jump Lunge

The 7-Day HIIT Challenge – Day 2

Each set in this workout is engineered to work as many muscle groups as possible, super-charging your metabolism. Remember form is especially important – quality trumps quantity! Sprint Cross-Country Seal X-Jack Mountain Climber Squat Reverse lunge Squat Jump Jump Lunge Power Knee Burpee Tiger Push-Up

Firm and Burn HIIT Workout

Jumping Jack Cross-Country Seal X-Jack Mountain Climber Mountain Climber The Mummy Push-Up Seal Jack Squat Squat Hold Sprint 1-2 Push Crab Touch Squat Jump Pedal Squat Lift Ski Squat Cross Push 4 Calf Raises + 4 Taps Reach Up Down

Metabolic-Boosting HIIT Workout

Sprint Cross-Country Seal Power Knee Mountain Climber X-Jack The Mummy Reach Burpee Squat High Knee Jump Lunge