12. Do Calisthenics

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Calisthenics are great for building lean muscle, great for your heart, and they’re even great for tightening skin after weight loss! Add a round of calisthenics to your weekly routine, three or four times a week, and enjoy the jumping jacks, push-ups, windmills, and more…they can be fun, and they’re helping your skin readjust at the same time. Exercise is one of the best natural ways to tighten loose skin.

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