Running after giving blood - getting harder!

[SHutchinson]

I don't mean immediately after, I'm not that much of a stupid runner. But, I'm finding that giving blood is increasingly depleting me of energy after giving blood. I'm 44 now and of average fitness, I used to spring back and do bootcamp/exercise the next day. Now a gentle 3 or 4 miles sees me exhausted even after 2 or 3 days.

Got a piece of steak and some broccoli lined up for this evening, that might put the lead (iron) back in my tank (blood)!

Anyone else find that getting slowly older sucks?

[asfault]

Surely it takes the body more than 1 day to replace a pint of blood?

Quick google search says 4-6 weeks.