Why the sight of blood knocks us out

blood splatter

Do you pass out when you get your blood drawn? You're not the only one.

Why some folks faint at the sight of blood and others don’t isn’t entirely clear, but prior fear of blood and needles often increases the chances of passing out.
via Popular Science "http://bit.ly/2QXhDnz"


Popular posts from this blog

Evernote cuts staff as user growth stalls

The best air conditioner

We won't see a 'universal' vape oil cartridge anytime soon