[dinduks]

It depends on the fitness level of the subjects. The more fit they are, the less low intensity exercise (treadmill) is effective.

More info here: https://roguehealthandfitness.com/importance-exercise-intens...

[52-6F-62]

Also depends on how you use it.

If slow, long jogs aren't cutting it—hit the sprints. 20 seconds on (full out), 30 seconds off (medium-light pace), or some similar interval.