The Psychological Reason People Donate Blood

It makes no evolutionary sense. So why do we do it?

Photo by Tim Marshall on Unsplash

Donating blood, if you pause to think about it, is more than a little strange. With no reward other than feeling like a good person, and sometimes some juice and cookies, you allow a stranger to reach into your body and take the very blood running through your veins — enough to make you feel literally…