High-Intensity Interval Training (HIIT) alternates short bursts of near-maximal effort with periods of rest or low-intensity recovery. Because it pushes both the cardiovascular and muscular systems, ...

Everything you need to know about high-intensity interval training to help you hit the ground running in 2026—including a low ...

Interval training workouts involve structured exercising at different intensities with recovery periods in between. High intensity is usually anaerobic exercise, while the recovery periods involve ...