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 ...

A certified strength coach shares 5 chair exercises that build arm strength after 60—no weights or gym needed.

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 ...

It stands for as many reps (or rounds) as possible, and if youre a CrossFitter, youre likely well acquainted with this intense method of metabolic conditioning. If youre not familiar with the protocol ...