"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, ...

Try this full legs and abs workout using only kettlebells! Perfect for home or gym sessions, this routine strengthens your lower body and core without any extra equipment. Share with a friend and get ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." No offense to sit-ups, planks, and hollow holds, but basic core exercises can feel drab day after day.

No offense to sit-ups, planks, and hollow holds, but basic core exercises can feel drab day after day. They work the abdominals, but if you’re looking for stronger, sculpted abs, let me introduce you ...

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 ...

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?

Doing burpees can help you increase strength and fitness.But exercises such as kettlebell swings, plank jacks, and bear ...