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To test and strengthen your balance, try a side plank with a leg raise â get into side plank position, then lift your top leg and hold for one count. Lower it and repeat, then switch sides. In addition, planks work all the muscles you need to maintain proper posture, like your back, chest, shoulders, abs, and neck.
As in most arm balances, arm strength is something of a factor here but it's really all about core strength. All those deep abdominal muscles are what give you the control to do balancing postures. And doing plank (correctly) is a great way to build them. Next stop, crow pose! To get the most out of plank, you need to use your abs to support your body's midsection, keeping that straight line of energy from the crown of your head to your heels. Increasing your hold time in plank is another good way to build strength.