The nytimes article listed in the parent, which is what sparked the 7-min workout craze, discusses and links to the study. I am not going to get into too much

The nytimes article listed in the parent, which is what sparked the 7-min workout craze, discusses and links to the study. I am not going to get into too much detail, but the general idea is that working a bunch of different muscle groups at high intensity for short periods gets you most of the benefits of longer endurance based workouts.