Originally Posted by
CbadRider
I'm a regular blood donor. I used to be able to take a day off and then resume my regular exercise the second day. Since I've gotten older it now takes me about a week after donating to fully recover to the point where I don't have trouble catching my breath under heavy exertion. YMMV.
This has been my experience, too. I finally stopped donating because I could never afford a whole week off the bike, except during winter, when I couldn't afford a whole week out of the pool.