High-intensity interval training has transformed the landscape of modern fitness, offering scientifically proven results in condensed time frames. This comprehensive seven-day program combines intense ...

HIIT safely improves aerobic capacity and muscle endurance in newly diagnosed inflammatory muscle disease patients.

High-Intensity Interval Training (HIIT) alternates short bursts of near-maximal effort with periods of rest or low-intensity ...

Push your limits with this advanced, low-impact HIIT workout—no repeats, all results. Perfect for home fitness and full-body ...

If cardio seems more like a chore and less like a fun sweat session, this 10-minute HIIT workout can help you switch it up. Presented by Allegra, this high-energy routine is a quick way to get your ...

HIIT workouts are meant to be fast and furious. They rely on explosive exercises like burpees, high knees, kettlebell swings, sprints, and other moves that spike your heart rate and make you sweat — ...

Those mid-class sprint intervals are tough. But experts break down whether they really get you ready for race day.

Presented by Athleta, this HIIT workout is basically a guaranteed confidence boost. Celebrity trainer Amanda Butler leads you through two different rounds of full-body interval training, helping you ...

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 ...

Sprint interval training can improve aerobic capacity, anaerobic capacity, speed and power, says Stone, and the research ...

People who’ve had a stroke might worry about pushing themselves hard at the gym. New research suggests high intensity interval training (HIIT) can do more to improve fitness than moderate-intensity ...