"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Situps and crunches aren't the only (or even the best!) way to strengthen and define your abs. For proof, ...

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While core exercises typically conjure up images of planks and bird dogs, the kettlebell is an unlikely hero when it comes to ab workouts. The versatile and dynamic piece of equipment challenges your ...

Confession: I'm a certified personal trainer, but I absolutely dread core work. (Anyone else?) My loathing could be because my core has always been one of my weakest muscle groups, or the burning ...

Feeling bored of your go-to planks and crunches? Good news'your tried-and-true bodyweight exercises aren't the only way to whip your abs into shape. Feeling bored of your go-to planks and crunches?

This one’s an abs-olute winner. A classic, fit-for-all workout is back in the spotlight after a popular workout video resurfaced, showing a fitness influencer’s surefire way to a rock-hard core using ...

Sometimes it’s all in the design. One trip to the gym and you’ll quickly learn that weights come in many forms. The kettlebell, with its handle and bottom-heavy design, begs to be used for dynamic and ...

Enter any gym, and you’ll see the same core workout: crunches, situps, ab machines, and endless twisting exercises. The logic ...

It’s a debate as old as time in the fitness world: dumbbells or kettlebells. Truly, there’s room in the metaphorical sandbox for both, but many gym-goers — especially those just starting to strength ...

This lesser-known plank variation that was invented by Soviet special forces trainer Pavel Tsatsouline focuses on full-body ...