When you picture the typical high-intensity interval training (HIIT ... So what happens when you need a spicy HIIT circuit that focuses on the arms, shoulders, chest, and back?

HIIT workouts alternate between short ... Remember to pump your arms and get your body involved. Keep your head up and look forward without slouching your shoulders or back.

HIIT workouts speed up the metabolism ... Jump both feet out to the sides as you raise the arms out to the sides and up overhead. Bring the arms down as you jump the feet back to center.

Thrusters (8 reps): Start with a squat, then, as you drive up, press your arms overhead. This compound exercise builds ...

Barre is entering the fitness mainstream. One writer makes it her mission to go to two barre classes a week, for a month, at ...

Skip the run — blast through calories with two dumbbells and this 20-minute HIIT workout ...

Discover the results of trying celebrity workout routines like Gerard Butler's 300 workout and Britney Spears' fitness plan.

High-intensity interval training workouts, or HIIT, which involve bursts of high-intensity effort followed by short rest periods, are almost unmatched in their efficiency. These workouts can take ...

Seth Meyers has subtly responded to Donald Trump after the President-elect called the late-night host “dumb and untalented” on Truth Social. On Wednesday’s “Late Night with Seth Meyers,” the host didn ...