"The fact is, a lot of us spend more time at the gym because we think it's better for us. We jog while watching TV; we do the stationary bike while reading a magazine; we lift weights at a moderate level for 30-60 minutes.

But the hard scientific fact is that we could get the same results from one minute of flat-out exercise."

https://www.inc.com/melanie-curtin/science-says-1-minute-of-this-kind-of-exercise-may-equal-45-minutes-of-jogging.html