Planks: Doing a plank helps improve core strength and stability while strengthening the abdominals, back, and shoulders. Start with a 20-second plank, and as you get more comfortable, hold it for as ...

Meghan Trainor showed off her flat abs in a mirror selfie with coach Bella Maher after the pop star went through a weight ...

One popular fitness expert shares the best home ab workout and 7 intense lower ab exercises, for a combination that hits your entire core.

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