Bicycle nuts of all kinds (including those in the “Slow Bicycle” camp) have been sharing this story at the New York Times about the benefits of short, high intensity interval workouts to your health.
Researchers at McMaster University in Ontario have found that relatively short, twice weekly 20 minute workouts of high intensity have as much benefit as longer, daily low intensity exercise.
For the high intensity intervals, you push yourself for a minute at 90% of your maximum heart rate, then rest for a minute at low intensity. Repeat ten times for 20 minutes of intervals.
So how do you know when you’re at 90%?