Do you exercise and stretch your joints before you get out of bed in the morning?

I do. While I am still warm, under the covers I start flexing my toes, then rotating my ankles, then my knees, then pretend I’m riding a bicycle, then….and work my way all the way up. Heck, I even close my eyes and rotate them in circles 10 times in each direction. It only takes about 1 -2 minutes and when I get out of bed I’m not all stiff like a whole lot of guys my age (~60). I’ve been doing it for as long as I can remember.
If/when I get up to use the bathroom in the middle of the night upon returning to bed I will do kegel exercises a few times.
I’m in pretty good shape and feel great. When I get out of bed I’m running on all cylinders. I cannot tell which is the cause and which is the effect.
I’ve never seen any recommendation from a credible source extolling the virtues of what I call “no load exercise and stretching”. It just seems to make sense to me.
Am I the only person on the planet who does this?