Low-intensity training is great for you, no matter what your fitness-tracking gadget says.

Heimlich is a contributor for TIME. Heimlich is a contributor for TIME. The weight room at the gym can be an intimidating place. The equipment looks like it could crush you if you use it wrong. People ...

At 88, Jane Fonda is still moving, thriving and inspiring millions-and her secret isn't complicated. The celebrated actress ...

But like everything else in life, when it comes to strength training, you can have too much of a good thing. Lift too often ...