Fear and Adrenaline Rush
Your muscles tense up.
Your breathing speeds up.
Your heart rate speeds up.
Adrenaline Rush: The Science of Risk - Trailer (High Quality)
Nucleus accumbens plays a role in fear.
Fear is a negative emotion.
Fear Of Spiders
Handling a Female Black Widow Spider (Latrodectus mactans)
New experiences create fear. You feel relief when the scary experience ends. Pleasure and relief are positive emotions.
Making new friends
What Cats Do At Night...