Unless he adds nanobots to his bloodstream or something science fiction-y like that, he'd be a GREAT speaker for the habit. And him not drinking for the day he donates would show his discipline.
And hey, I donated today. And have the bandages -- plural -- to prove it. The vein on my left arm that the phlebotomists (I love that word) tried first fought with us, and I started to bruise, so we aborted that attempt and switched to my right. I was so, so tempted to claim I had pints taken out BOTH ARMS AT THE SAME TIME because that is hardcore. Or would be, if it wasn't a really bad idea. Anyway, a pint of my O-Negative is in the Red Cross's hands, as I try to do every two months.
Moments from getting there, being there, and leaving there:
There. Checked in. I can more easily remember some of these details because I've written them down. I hope Future-Me appreciates that.