Do you keep physically active? I am a couple of years older. The main thing I notice is that I want more sleep and have trouble getting it.And the grey hair.
I don’t sleep that well but am working on it. Ever since I had my first kid (15 years ago) the slightest noise or interruption in the middle of the night and I’m 100% awake ready to rock. I was the night duty parent for both kids so that’s where that comes from I assume.
In my 20s and early 30s I did a lot of drugs and was blackout drunk two nights per weekend. Having kids and a no nonsense/assertive wife put an end to that with the side effect of dramatically improving my health and career.