"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Whether you want to finally finish that 5k, train up for a half-marathon, or just make it through your ...

Working out has always been a huge part of my life, but even I still mix up my fitness terms. Whether it’s abduction versus adduction or basal metabolic rate and resting metabolic rate, the lingo can ...

When I’ve finished a long run, my leg muscles feel like they’re ablaze. By the last few seconds of planking, my abs feel like they’re burning and close to shaking. When the workout burn is real, it's ...