Anyone that follows me on Strava might be used to seeing some micro-intervals in my workout reports. In addition to making cool looking reports, research has shown that these workouts are highly ...

We like to think of time in distinct intervals: we have seconds, hours, and years. It’s not too difficult, then, to imagine that according to quantum mechanics, time is not a continuous flow, but is ...

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 ...