DUDE I’m glad to hear someone else say it
I’m not 45 but I might as well be for all the arm strength or ability to keep my back straight that I have… 

I was gonna start at 12, then do 25, then 50, then 75, then finally be up to 100, taking each step as I felt ready.  Because everyone doing this is starting to inspire me. 
Ok, I have no excuse anymore… I’ll start, too!