Your calf muscles are often referred to as the 'second heart' because they play a crucial role in pumping blood around the ...

The world’s largest running event returns for its 13th edition. Runners and wheelchair-users across the globe start together, all moving for one shared goal: to find a cure for spinal cord injury.

Although we’re getting better at completing those strength sessions, new research shows that most of us are still overlooking ...

When you’re a runner, every day running feels like leg day. Your glutes, hamstrings, quads, and calves are already doing the most to get you up and over hills, through intervals, and across finish ...

As Lyndsey sums it up: “It’s one of the most effective bodyweight moves a runner can add. Do them regularly, and you’ll feel ...

"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, ...

Cycling and running both improve fitness. Learn how they compare to decide which fits your goals and lifestyle best.

You hit the shower after a good run and then notice them — those black-and-blue marks on your legs that you weren’t expecting. They may come from an actual injury, or from exercise-induced bruising.