I don’t often add crunches into my exercise routine, and probably prefer lifting heavy weights to strengthening my core with isolation ab exercises. Keen to mix things up, I did 50 frog crunches every day for a week to see what could happen to my ab muscles.
It’s a common misconception that crunches are ineffective or only work the rectus abdominal muscles — the “six-pack” muscles. Unlike traditional crunches, the best crunches and variations hit various core muscles, which brings us to the frog crunch.
