Want to get a good workout without any gear? Here's what you need to know about calisthenics.

Calisthenics, or bodyweight training, is so much more than a last resort for when you're traveling, short on gear, or looking ...

Will Smith’s journey into a little-known cave where tarantulas grow as big as dinner plates

In his new National Geographic series Pole to Pole, the actor ventures deep into the Amazon in search of creatures whose ...