Strengthen more than just your core muscles with the humble-yet-mighty plank.

Why one trainer calls the plank variation "no joke." ...

The fitness world has embraced a new champion in core training, and traditional sit-ups have taken a backseat. The plank, despite its deceivingly simple appearance, has captured worldwide attention ...

Burpees are a popular exercise, but they can put a lot of stress on your joints. You can swap burpees for other lower-impact ...