…if you’re an overweight out of shape man. The lede touts three 4-minute workouts a week. The fine print adds a 10-minute warm-up and 5-minute cool-down. So now we’re up to 19 minutes x 3 = 57 minutes a week.
Study participants increased their oxygen consumption, a common measure of fitness. The also dropped their fasting blood sugars by 5%.
I don’t see why you couldn’t replicate these results with other types of exercise, such as bicycling, burpees, or running outdoors.
We’ve already established that most of us will never exercise for two or three hours a week. How about an hour? If you’re sedentary now, what are you waiting for?