Medically reviewed by Katrina Carter, DPT Core exercises like crunches and planks help improve your balance and posture.Side ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." All it takes is a tweak or two, and virtually any exercise for any muscle group can instantly become a ...

Sit-ups and crunches both target your core muscles, but work differently. You can use both exercises to build strength, endurance, and control.

When most people think of a strong core or achieving abs, the first exercise that comes to mind is often sit-ups. While sit-ups have long been a go-to for strengthening the core, they're not always ...