I have had seven vials of blood taken out within the past 48 hours, and I'm feeling pretty weak and woozy. Should I refrain from exercising today?
I'm petite and too underweight to donate blood (not because I'm underweight per se, but because a normal BMI at 5'1" is often not high enough to donate), so I suspect it's having an effect on me. It would be nice to know for the future.
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