How (and Why) to Do Copenhagen Planks

This side plank variation is an underrated way to work your inner thigh muscles, and it has been shown to prevent groin ...

You Don’t Need Sit-Ups—Try This 5-Minute Core Workout Instead

A strong core improves posture and stability. Try this bodyweight plank routine at home. It only takes five minutes.
The New York Times

How to Do a Perfect Plank

A plank is a core exercise that requires glute and leg strength, as well as shoulder stability. To hold a plank, you need to keep your spine neutral and support it with your abdominal muscles. That ...
Health on MSN

4 bodyweight exercises that strengthen your core as effectively as a plank

Medically reviewed by Amy Kwan, PT Several bodyweight exercises can strengthen your core in addition to the plank.These ...