The One Minute Workout has been well documented. Is one minute of exercise all you need? (2016) https://edition.cnn.com/2016/05/23/health/one-minute-workout/i

The One Minute Workout has been well documented. Is one minute of exercise all you need? (2016) https://edition.cnn.com/2016/05/23/health/one-minute-workout/index.html https://edition.cnn.com/2016/05/23/health/one-minute-workout... This study is just bringing down the 20 seconds to 4 seconds, as per the article, The increased rest time means a longer work out.