For best results, push yourself! If you have a strong core, do 100 reps/50 reps on each side. If you are looking to build up your core, begin with doing 50 reps/25 on each side, take a break to work another muscle group like arms, then do another set of 50 reps/25 on each side. Continue to work up to doing 100 reps straight through.
Photo Credits: Natalie Rich
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