Nice hear from the middle-agers here! I agree the 40s are can be a great decade. I'm in good health, not being on any medication but for the occasional med for my gastric reflux and motrin for a headache. I still do no what to be when I grow up, as I've gone back to college yet again, still trying to get a college BS degree (I have my associated degree in nursing and am an RN).
All in all a great time.
I understand the concept of feeling younger in my mind. Sometimes I pass a mirror and wonder "who is that old guy"? LOL