As HIIT's popularity soars, sprint interval training, or SIT, is doing its best to catch up. Can shorter, harder, faster deliver better results? As the popularity of HIIT continues to soar, sprint ...

HIIT, or high-intensity interval training, is increasingly popular, and it provides plenty of benefits, from torching calories to increasing your VO2 max and overall athletic performance. SIT, or ...

For those who live to sweat — but maybe want a chance to fully catch their breath — SIT is the new HIIT. HIIT, or high-intensity interval training, includes bursts (typically 30 seconds to a few ...

Sprinting can deliver the benefits of an hour-long workout in just a few minutes. Unlike steady-state running, Sprinting is explosive running at 90-100 percent effort. It is a high-intensity training ...

Hyrox is a real challenge because you have to run 8km and finish all eight workout stations, from the Farmer’s carry to ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." In a small study, sprint interval exercise helped to “clean-up and rebuild” cells better than ...

Kevin Hart transformed his fitness with sprinting, HIIT, and full-body exercises like cleans and presses to keep fit in his ...

It's well established that women entering (peri)menopause can gain real health benefits from lifting weights. However, while this messaging is incredibly important, it can sometimes mean that cardio, ...

For your speed workout, try a fartlek run/walk: After a walking or easy running warmup, run hard for 30 seconds or as long as ...