Variation is the key to positive changes when it comes to our fitness. Sometimes our bodies grow too familiar with the same movements or our growing strength needs more intensity and challenges.

While the plank is an excellent core exercise, several other options can strengthen your core. You can do these bodyweight exercises anywhere, and they don’t require equipment.

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? I'll admit, I sometimes sigh when an instructor cues up a plank. I know, they ...