A reflex action follows this general sequence and does not involve the conscious part of the brain. This is why the response is so fast. Receptor in the skin detects a stimulus (the change in ...
They don't decide to do it, it's an automatic response and try stroking your baby's cheek, they'll turn their head to that side and make little sucking motions with their mouth. That's a reflex ...
Look at you. You're out of control. Ah, it's not you. I'm just talking about your reflexes-- those involuntary muscle movements that you have no control over. And reflexes are a great thing.