Crunches can improve flexibility and posture as well. And they have the benefit of convivence "since you can perform crunches anywhere—whether it be at home or in a hotel room," says McDonough.

Crunches can improve flexibility and posture as well. And they have the benefit of convivence "since you can perform crunches anywhere—whether it be at home or in a hotel room," says McDonough.

Reverse crunches can improve lower-back strength and flexibility, contributing to better spinal health and reducing the risk ...

20s. In your 20s, David said your core is “at its prime,” so you should be able to knock out 40 to 50 crunches in one go. “Think of it as a warmup for all the adventures your abs will ...

What are chair crunches, how do you do them, and what are the benefits for your core? We did them for a week to find out ...

Ab cable crunches work your lower back as well as your core, and by strengthening these muscles, your body has more stability. I did ab cable crunches every day for a week — here’s what happened ...

Doing the crunches before heading out for a run helped me to think about my form as I moved — keeping my abdominals engaged and my torso upright, rather than slouching into my stride.

Crunches are essential for building core strength, according to Ezekh, who is based in Los Angeles. "A strong core is super important because it keeps everything stable," he said.