How cold is too cold for humans?

Answer 1

Temperatures that cause you to lose heat faster than you produce it is too cold. for the most part, temperatures that cause your body temp to drop below 95° F (35° C) will cause the onset of hypothermia. Hypothermia is a serious condition. Symptoms include:

• Shivering
• Clumsiness or lack of coordination
• Slurred speech or mumbling
• Stumbling
• Confusion or difficulty thinking
• Poor decision making, such as trying to remove warm clothes
• Drowsiness or very low energy
• Apathy, or lack of concern about one's condition
• Progressive loss of consciousness
• Weak pulse
• Shallow breathing

Situations as simple as submersion to the knees in 40° F water for five minutes or more can lead to the onset of hypothermia. Once symptoms have begun to manifest, medical treatment should be sought.