How long does it take my body to remanufacture all the stuff it lost when I donated a pint of blood?
The Red Cross makes you wait 8 weeks between donations but that seems overcautious to me. They tell you no heavy lifting for 12 hours which seems quite reasonable.
OTOH I donated last Thursday and really felt pooped when I worked out Saturday. Seemed like I was running out of oxygen quicker than usual, but of course, the blood donation may not be the only variable.
By today I felt back to my old self. Seems like the fluid would come back very quickly, same day maybe. But I guess there are red cells, white cells, platelets, and I don’t know what else in there that have to be made.