Small Space Cardio Interval

Need a quick cardio workout to do in a small space? Here’s a simple set that you can do when you can’t get to boot camp. This is a 40/20 protocol: this means you work for 40 seconds and rest for 20 seconds. Try to do this set three times with no more than the prescribed 20 second rest between sets. (Of course you can modify as you see fit.)

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