We're definitely fans of exercise snacking, but sometimes nothing but a long, sweaty workout will do — and if that's what you're craving, this 45-minute high-intensity interval training workout with ...

Break up your running intervals with this three-move strength-training series, which melds cardio strength training workouts into one. Instead of doing however-many-minutes of cardio and then heading ...

While talking to my coworker about my Shape Up series, I mentioned I wanted to take a dance class. She swore by Grit Fitness’ step aerobics class, so I signed up for an evening session. I was pumped.

Ease into exercise with “Japanese walking,” a popular 30-minute interval training regimen that alternates bursts of speed with a walk at a normal pace.