Hypothermia is defined as body temperature less than:

Hypothermia occurs when the body temperature drops below the normal range necessary for proper physiological function. The correct threshold for defining hypothermia is a core body temperature of less than 35°C (95°F). At this temperature, the body's mechanisms for thermoregulation begin to fail, which can lead to serious health issues, including impaired cognitive function, loss of coordination, and potentially life-threatening complications if not addressed promptly.

Recognizing the importance of this threshold is crucial for emergency responders, particularly in cold weather conditions or scenarios involving water rescue. It directly informs the protocols and treatment plans to effectively manage and treat victims experiencing hypothermia, including how to warm the body safely and efficiently. Understanding this definition is an essential aspect of ensuring the safety and health of individuals in potentially hazardous situations.