10 minute muscle builders

If you are short on time, space, equipment, or anything else that we are short on at this time of year, then you're going to love these quick and easy 2-exercise workouts. I even have a few muscle-building 10- minute 2-exercise workouts for you below. But first, how to tighten your arms and butt... The Bodyweight Fat Blaster to Tighten Your Arms 1) Total Body Extensions (or Burpees) - 30