I gave blood this last tuesday (double red blood cell), and not surprisingly the next day I felt like crap while doing a very light workout (pushups, situps and a two mile run). Three days later however I did a PT test, and in my two mile run I got light headed and felt like I had zero energy. I've never had trouble running two miles before. I've been eating a ton since donating blood and am hydrated.
Anybody had trouble with energy and recovery after giving blood? Or know how long it should take to start feeling like yourself again?