Crunches and sit-ups aren't the only way to build strong abs. Underrated exercises like planks and flutter kicks are effective, low-impact alternatives. Doing different core exercises also helps add ...

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Here's what happened when this writer did flutter kicks for a week ...

It can be easy to get in an abs workout rut, doing crunches, sit-ups, or planks on repeat. While planks have plenty of benefits, allow me to spice up your core workout with a new go-to move: scissor ...

Core training has always been part of military PT and fitness testing. From crunches to sit-ups, flutter kicks, leg tucks and plank poses, the U.S. military uses many exercises to test core strength.