Forget 'basic' crunches — here's 3 ab exercises you need to try, according to a functional training coach
Build strong core muscles without weights, just using these three crunch variations from a functional training coach.
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Who needs planks? The crunch clap exercise builds powerhouse core muscles without weights
The crunch clapping exercise is exactly as it sounds ... but the most popular starting positions involve sitting in a v-sit position or laying on your back; you’ll then raise your legs ...