I had a friend who was in a bad wreck and received almost as much blood as the entire body contains so I tried to give blood to credit his account. I passed out. Woke up with a black woman/nurse slapping the hell out of me saying wake up John. She said you gonna have to find some other way to help your friend because this ain’t for you. I’ve passed out when I get a bad cut. Didn’t happen when I was young
I have a good friend who has that same syndrome.
Blood tests are tough!
I’m the opposite. I can watch myself give blood, take needles, etc. I wince when I see others take a needle.
Just one of those things, I guess.