Personal trainers and exercise class instructors seem to have an acronym for everything, and it can be hard to keep up. Between gym slang like PR (personal record), HIIT (high intensity interval ...

In what might be some of the most exciting news this year, Sweat (a.k.a. the app co-founded by Aussie fitness star Kayla Itsines, and home to workouts from trainers Kelsey Wells and Cass Olholm) has ...

Trainer Ariel Belgrave's favorite fitness word? Flex. And you can bet you're going to be doing a whole lotta that during (and after!) the upper-body dumbbell workout coming up. This 20-minute arms and ...

Add Yahoo as a preferred source to see more of our stories on Google. Who says you have to use gigantic, joint-buckling weights to get the body you want? Dumbbells, cables, and light weights allow for ...

To achieve a sculpted look with the upper body, you need a well-rounded routine made up of exercises that target every part of the arm, including the shoulders, triceps and biceps. Strong arms don’t ...