"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Picture this: You’re training for a race and have been determined to knock a few minutes off your 10k ...

Learn what happens under the hood when you’re pushing top speed, and what it takes to increase your pace for 26.2.

If you want to run faster, and do so into the later decades of your life, you may need to start moving a little more like a kid again. “It’s really important to be able to express yourself at multiple ...