"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Both running and swimming are great forms of cardio, engaging your muscles, boosting heart health, ...

Has Age Group Swimming Gotten Too Competitive? As the years go on, swimming keeps getting faster. Like most sports, it evolves as athletes find new ways to become stronger, quicker, and more skilled.

If you feel like all of your friends are suddenly training for major endurance competitions like half marathons, marathons, or even triathlons, you might feel a bit of FOMO from watching them rack up ...