Planet Fitness is inviting high schoolers ages 14-to-19 a chance to work out for free all summer long. In a statement, the franchisor said the offer is part of an effort to give teenagers a chance to ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." With back-to-school season in full effect, teen boys are once again set to be deluged with social media ...

Everything changes with age, it seems – from your blood pressure and exercise recovery time, to how many times it’s “normal” to get up and pee at night. And now, Mark Harris, a fitness expert at ...

Parents naturally want to protect their children, even when their fears aren’t based on facts. One 17-year-old was confident in his weight training abilities, but his parents constantly raised ...