1&1 is a High Intensity Interval Training (HIIT) workout that will help you speed up your body's progress to feeling stronger and being healthier.
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DAREBEE Workout: What it Works
Get up close and personal with your inner being with minute-long workout routines followed by minute-long breaks in between. This is interval training. It primes up your system, helps you burn fat. It will challenge you irrespective of your fitness level as you can simply up the intensity of each rep, in each set, for that special burn.
Extra Credit: 30 seconds rest between sets. 
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