Best Instagram Workouts
These Workouts Left Me So Sore . . . and They're All From Instagram
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Get ready for four rounds that will work your core, arms, and legs (I felt it in my shoulders big time). I used two eight-pound dumbbells and my trusty booty band. Tip: download a Tabata timer to help you keep track of the "40 seconds on, 20 seconds off" format.