"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, ...

There is a certain camaraderie between swimmers and runners. It’s indescribable, but the two cardio-intensive sports often are paired. Many swimmers try to cross-train into running and vice-versa, but ...

When candidates are training for the Navy physical screening test (PST) for SEAL, EOD, diver, SWCC and air rescue jobs, they typically find improvements in running and swimming the toughest to achieve ...

Depending on the athletic history of a military recruit, the process of preparing may be different from one person to the next. Endurance athletes tend to do well on calisthenics and cardio fitness ...

Paralympic swimming medalist Ali Truwit is running the TCS New York City Marathon just two years after surviving a shark ...

Ali Truwit has proven she won't back down from a challenge. Two years after losing her left foot in a shark attack and a year ...