Figuring out how many sets and reps to do, what exercises to try, and where to start can be daunting, and it’s one of the main reasons many people opt for a personal trainer or group classes. Once you ...

In the fitness world, the focus is usually on how much weight you lift, the number of reps, or the intensity of your cardio. But there's a silent yet crucial factor that determines the effectiveness ...

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...

He and his colleagues have found that even five- to 10-minute bursts of an exercise with an intensity like running, and as ...

German volume training (GVT) is an intense exercise program that builds the muscle mass and strength necessary for weightlifters to move beyond personal plateaus. It’s sometimes called the 10-sets ...