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DAREBEE Workout: What it Works
HIIT workouts work your muscles, cardiovascular and aerobic systems to the max which is why they are so effective. The Sonic workout makes you push your lower body hard and get in the sweat zone fast. Its deceptively easy format hides a cleverly targeted hyperloading of some of the body's key muscle groups for that extra-sweet sensation that you've really worked hard, afterwards.   
Extra Credit: 30 seconds rest between sets. 
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