"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, ...

"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 ...

If you’re looking for ways to increase the difficulty of your core workouts without simply upping the amount of reps or time you work for, then adding in some weight is a great option. This 12-move ...

When I’m short on time and equipment (often), I use a medium to heavy kettlebell and get to work strengthening my core muscles at home. These three kettlebell exercises will crop up in my routine ...

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 ...

B) Change hands as it passes in front of and behind you. 'Focus on keeping your waist stable and still throughout the movement,' says Haywood. 'This exercise is excellent for building core stability ...

Regular aerobic exercise and targeted resistance training exercises can help reduce abdominal fat, especially when paired ...

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?