Definitely. Not quite 50 yet. I'm 47 and my S.O. is 49. We are up at 5am most weekdays and hit the gym before we go to work.

On weekends I find we no longer stay up until the wee hours and therefore get up much earlier than in the past.

Two weeks ago we went to Punta Cana for a week's vacation and we were in bed by 11-ish each night and up by 7am each morning; on vacation! I never expected that!