How training affects cells is determined not only by whether we move at all, but also by how intensely and for how long we do ...

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 ...

Interval training has become very popular these days, thanks to high-intensity interval training, or HIIT. Proponents of this type of exercise say it delivers many of the benefits of a much longer ...

The festive season can throw our exercise routines out the window. You might be staying somewhere different, with no access ...