"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Do you ever wake up with tight, stiff legs and wonder why? Or maybe, during yoga class, you find it ...

You’ve heard of cardio. You’ve heard of strength training. You might know about physical therapy. We’ve got one more thing to add to the mix: mobility. A full-body mobility routine won’t take long, ...

Here's why your obsession with stretching is actually keeping you tight and how to finally find relief.

As we age, it’s not uncommon for many people to let out a muted groan when getting out of bed in the morning. But if you “oof” every time you get in a car or “aargh” while bending over to pick up ...

As they age, it’s not uncommon for many people to let out a muted groan when getting out of bed in the morning. But if you “oof” every time you get in a car or “aargh” while bending over to pick up ...

This undated image shows physical therapist and Pilates instructor Jessica Valant demonstrating a stretch movement in Colorado. As they age, it’s not uncommon for many people to let out a muted groan ...

Strength training makes you stronger so you can run harder and longer. Mobility exercises make you run more efficiently.