Mice subjected to involuntary exercise on a treadmill exhibit higher cortisol levels and shorter lifespans compared to mice that voluntarily run on wheels.

“Now, most people don't know how to do this when when it's not the gym. Most people don't know how to do this when life is throwing something at you, when life is making you go to the gym. It's interesting because if it's not of our own valition, it's it's like you know those old mouse studies where mice are subjected to exercise or and and so they're they're made to run on a treadmill and their cortisol levels are unbelievably high and they die and then they actually put the same wheels out in the field and field mice just find the wheels and run on them >> and they live longer.”