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Hypothermia is defined as a body core temperature below 35.0 °C (95.0 °F) in humans. [2] Symptoms depend on the temperature. In mild hypothermia, there is shivering and mental confusion.
Colder temperatures cause the air inside a vehicle's tires to compress, lowering the air pressure.
A 2001 NHTSA study found that 40% of passenger cars have at least one tire under-inflated by 0.4 bars (6 psi) or more. [1] The number one cause of tire failure was determined to be under-inflation. Drivers are encouraged to make sure their tires are adequately inflated at all times.
Severe cases can cause cardiac arrest. [9] Hypothermia should be treated first, if present, by bringing core body temperature above 35 degrees Celsius. [6] [10] Raynaud's phenomenon: An abnormal spasming of blood vessels often in the tips of fingers and toes - usually in response to strong emotions or cold exposure. [8]
According to The Guardian, scientists have traced this top cold-weather myth to a United States Army manual from the 1970s recommending a hat in the cold because "40 to 45 percent of body heat" is ...
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[20] [21] The normal human body temperature can be as high as 37.7 °C (99.9 °F). [24] Hyperthermia requires an elevation from the temperature that would otherwise be expected. Such elevations range from mild to extreme; body temperatures above 40 °C (104 °F) can be life-threatening.
Low temperatures cause engine oil to become more viscous, making it more difficult to circulate the oil. Air becomes more dense the cooler it is. This affects the air-fuel ratio, which in turn affects the flammability of the mixture. Fuel becomes thicker because the paraffin wax in the fuel is thicker at low temperatures (most common in diesel ...