Why Fever Gives You Chills 🤒 #viral #medical #medicalfacts #fever #shorts #trending #short

Added: 2026-05-19

[00:00:00]When harmful germs enter your body, your immune system quickly detects the threat. Your immune cells release [music] special signaling chemicals called pyrogens. These signals travel to the hypothalamus, the part of your brain [music] that controls body temperature.

[00:00:15]This makes you feel cold and causes shivering >> [music] >> as your muscles rapidly generate heat.

[00:00:21]The higher body temperature slows the germs down >> [music] >> while helping your immune system work faster.