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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.
It may not look like much, but the plank can't be beat for building strong abs from the inside out. Discover why a minute spent planking is never wasted! If you've listened to the chatter among fitness professionals over the past few years, you probably heard that crunches shouldn't make up the bulk of your ab work.