Hibernation is a survival strategy that allows animals to conserve energy during harsh conditions. Metabolism slows down, body temperature drops, and heart rate decreases to minimize energy use. Bears, bats, and certain amphibians enter prolonged sleep-like states to survive winter months with limited food. Some species, like Arctic ground squirrels, supercool their bodies below freezing without harm. Scientists study hibernation to develop medical advancements, such as suspended animation fo...