Title: Cold and heat adaptations in humans - Wikipedia
Headings: Cold and heat adaptations in humans
Cold and heat adaptations in humans
Contents
Origin of cold and heat adaptations
Ecogeographic rules
Physiological adaptations
Cold
Heat
Acclimatization
Cold
Heat
Culture
Cold
Heat
Genetic adaptations
References

Content: There are two types of heat the body is adapted to, humid heat and dry heat, but the body has adapted to both in the same way. Humid heat is characterized by warmer temperatures with a high amount of water vapor in the air. Humid heat is dangerous as the moisture in the air prevents the evaporation of sweat. Dry heat is characterized by warmer temperatures with little to no water vapor in the air, such as desert conditions. Dry heat is also very dangerous as sweat will tend to evaporate extremely quickly, causing dehydration. Both humid heat and dry heat favor individuals with less fat and slightly lower body temperatures. Acclimatization
When humans are exposed to certain climates for extended periods of time, physiological changes occur to help the individual adapt to hot or cold climates. This helps the body conserve energy. Cold
The Inuit have more blood flowing into their extremities, and at a hotter temperature, than people living in warmer climates. A 1960 study on the Alacaluf Indians shows that they have a resting metabolic rate 150 to 200 percent higher than the white controls used.