Lack of time is often the main reason people don’t exercise regularly. But a type of interval workout recently popularised by ...

The Swedish word for ‘speed play’, fartlek is one of the most common training sessions that I use with my athletes. The history of fartlek training dates back more than 80 years, when coaches and ...

Interval training’s stock has soared in recent years. Is it any wonder, when it promises to deliver impressive health and fitness perks in a shorter time frame than other workouts? Sessions can be fun ...

Alex Hutchinson is a National Magazine Award-winning journalist and Outside’s Sweat Science columnist, covering the latest research on endurance and outdoor sports. New perk: Easily find new routes ...

Many inactive adults who tried a sampling of exercises preferred intense efforts to gentler workouts. By Gretchen Reynolds People who have never tried intense interval training might be surprised to ...

Forbes contributors publish independent expert analyses and insights. AI researcher working with the UN and others to drive social change. Oct 20, 2025, 05:19am EDT A humorous animated brain character ...

Significant improvements in aerobic fitness were noted after 12 weeks of high-intensity interval training sessions compared to traditional, moderate exercise sessions, according to a new study.

A new study published in the Journal of Psychiatric Research has found that a single session of high intensity interval ...