There's a big difference between GROWN MAN strength & young man ego.
A lot of youngsters just don't understand that just because a Man is in his 30-40's, doesn't mean we're on the brink on Death. Most of us in this age group are in our mental prime, so while physically we might not be as strong as we once were in our early 20's, we're still fully capable of getting to that capacity & have the mental wherewithal to use it effectively.
Or in other words, we can still hand out cans of whoops *** when necessary, just might have to ice the knees up a little bit more.
These are lessons I have to teach to our Blue, Purple & Brown belts on a regular basis, who think because they're young, big & strong that they have a walk in the park with us instructors. Then they find out the hard way that paying a mortgage & having the pressure of having a family to feed & take care of builds a different kinda mental resolve that simple youthful regeneracy cannot account for.