My name is Cori Ritchey, and I am an exercise physiology nerd turned fitness journalist, and the fitness editor at Women’s Health. When I’m not writing, editing, and researching fitness, I’m teaching ...

A rep is a repetition — that is, the number of times you do an exercise before you take a short break. A set is a group of repetitions, like two sets of 15 reps. Strength training is a type of ...

We spoke with experts to craft a research-backed blueprint to build sleeve-splitting biceps and triceps ...

Get ready for the ultimate pump.