Lord, I'm tired... And it's only Tuesday! How did my mom work until she was in her 60s, or my dad into his 70s? How did I do it, sometimes working two jobs while carrying a full load at school? Those were the good old days, I tell you. I was in my prime and full of piss 'n vinegar.
I'm hoping this is just the acclimation phase, which usually passes in about two weeks. At my age, that may take six and by then my contract will be over.