### Can Some People Naturally Tolerate Heat Better? Experts debate whether some people have a natural ability to cope with high temperatures. Some believe genetics play a role, while others think it's more about conditioning and lifestyle. #### Genetics and Heat Tolerance Thomas E. Bernard, PhD, suggests that just like athletic skills, some people may have a genetic predisposition to better handle heat. However, improving aerobic fitness can also enhance heat tolerance. Aerobically fit individuals can dissipate body heat more efficiently. #### Factors Affecting Heat Tolerance Graham M. Brant-Zawadzki, MD, notes that many factors influence heat tolerance, including weight, diabetes, medications, and age. Overweight individuals have extra insulation, making it harder to cool down. Diabetes can impair sweat glands, and certain medications can affect heat tolerance. Infants, young children, and older adults are more vulnerable to heat. #### Training and Adaptation Regular exposure to heat can build tolerance. Experts recommend gradually increasing the intensity and duration of activities in hot environments. This process, known as heat acclimatization, helps the body produce heat shock proteins, which improve heat tolerance. #### Practical Tips - **Stay Hydrated:** Drink plenty of water. - **Wear Protective Clothing:** Use hats and neck covers to shield from the sun. - **Limit Air Conditioning:** Avoid setting indoor temperatures too low compared to outside. - **Avoid Alcohol:** Alcohol can dehydrate you. Researchers are also exploring supplements like betaine to improve heat tolerance, but more studies are needed. By understanding and applying these strategies, everyone can improve their ability to cope with high temperatures.