Why does intense fear make us weak, light headed like we’re about to faint?

Question

I saw a spider the other night and felt like something was up and I got incredibly light headed, weak and I had to sit down for a bit. Shouldn’t fear give us adrenalin so we could run from the threat?

In: Biology

Answer 1

> Shouldn’t fear give us adrenalin so we could run from the threat?

Nope. The correct order is: freeze, flight, fight.