Honesty is my priority so I’ll tell you honestly I had trouble performing this arm and core exercise. The reason was weak arms. With a lot of practice, I've strengthen and sculpt my arms and now the forearm plank is my favorite daily workout. In addition to making your arms skinny, the plank exercise helps strengthen your core, boost shoulder stability and increase bone strength in your wrists and forearms. Drop into a push-up position, resting on your elbows and toes. Hold this position for at least 20 seconds for starters and a minute for experts.
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