Top 100 Hardest Bodyweight Exercises of All Time and How You Can Master Them

By Dr. Mercola

Bodyweight exercises are great because you can do them anywhere, anytime, at your own pace and level, alone or with a friend. They don't cost a penny, because your own body provides all the resistance needed to challenge your muscles.

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• Five Bodyweight Exercises You May Be Doing Wrong and How to Fix Them