Hypothermia Symptoms:
When the temperature starts to drop, the body can start to shiver. Shivering is the body's attempt to warm itself. It is an automatic defense against cold temperature.
Symptoms of hypothermia include:
Shivering.
Slurred speech or mumbling.
Slow, shallow breathing.
Weak pulse.
Clumsiness or lack of coordination.
Drowsiness or very low energy.
Confusion or memory loss.
Loss of consciousness.
In infants, bright red, cold skin.
People with hypothermia usually aren't aware of their condition. The symptoms often begin gradually. Also, the confused thinking associated with hypothermia prevents self-awareness. The confused thinking also can lead to risk-taking behavior.
https://www.mayoclinic.org/diseases-conditions/hypothermia/symptoms-causes/syc-20352682