We're already big fans of Kayla Itsines's fitness app Sweat and the muscle-building, fat-blasting, and heart-pumping workouts it features. We love that some workouts are bodyweight-only, while others ...

We're big fans of HIIT, but we also know all that high-impact exercise can start to take its toll on your body: plyometrics, lifting heavy, and high-intensity cardio like sprints and intense cycling ...

Kim Kardashian gushed over her updated workout routine, which includes several forms of sweat-inducing exercises like weight ...

A pop or two could be heard. And there was sweat. Oh, yes. Lots of sweat. In other words, it was a success. On Thursday morning, 17 members of the Naperville Fire Department gathered in a dimly lit ...