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

Sit-ups can be a great way to strengthen your abdominal muscles that sit around your stomach. But they can quickly get repetitive and its easy to accidentally lose your form, so when boredom strikes, ...

Sit-ups target your abdominal muscles, back muscles, and hip flexors, while crunches only target your abdominal muscles. • ...

Sit-ups (where the upper body is lifted completely) and crunches (where only the shoulder blades lift off the ground) are classic abdominal exercises. Photo: Getty Images Sit-ups and crunches are two ...

I'm someone who finds standard ab workouts a little dry. Sit-up to crunch to plank, back to sit-ups, and so on. While these exercises are effective for engaging your core muscles, they’re far from ...

In the workout below, Tamir demonstrates different variations of the crunch and the sit-up, including how to do both traditional moves properly. He says practicing cross-body exercises like the ...

They’re often lumped together as “ab exercises,” but crunches and situps aren’t the same thing — and choosing the right one can impact your results (and your spine). So, if your goal is stronger abs, ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through the links below." If your body were a bicycle, your abs and back muscles—your core—would be the frame. You need a ...