This rhythmic, high-energy workout is redefining arm training and full-body conditioning—no equipment required.

Functional strength training involves exercises that mimic everyday activities, such as climbing stairs. It aims to improve people’s movement in their daily lives or their performance in certain ...

Psst: it's not another plank.

New clinical data suggests that while running is great, muscle tissue is actually a vital "longevity organ" that determines how well—and how long—you will live.