"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Staying active and healthy throughout the year is a challenge we all face. While the difficulty can range ...

Randal Claytor is an associate professor of kinesiology, nutrition and health at Miami University. When you enter the gym, which way should you head first? Toward the treadmills and spin studio to get ...

Break a sweat with fitness instructor Poofy Moffitino, who leads this 10-minute summer-sweat dance-party workout joined by Lilian Gonzalez and Chelsey Cioli. You'll make the most of every second in ...

Let me introduce you to your good friend, sweat. Ignore the gross feel and the potential for B.O. for the moment, and think about what it does for you: When your body gets too hot, threatening to ...

Sometimes, you get to the gym in high spirits, ready to sweat it out. But other days, you might be pressed for time, squeezing in a workout between brunch and dinner plans. Or maybe you start to feel ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Let me introduce you ...