What factor can exacerbate heat exhaustion?

The factor that can exacerbate heat exhaustion is a high heat index combined with dehydration. The heat index is a measure that combines air temperature and humidity to reflect how hot it actually feels to the body. When the heat index is high, the body's ability to cool itself through sweating is compromised, especially if the individual is also dehydrated. Dehydration reduces the volume of blood and fluids available for sweating, leading to further challenges in temperature regulation. This combination can significantly increase the risk of heat-related illnesses, including heat exhaustion.

Drinking cold beverages can help cool the body down, while wearing loose clothing can facilitate ventilation and heat dissipation. Taking regular breaks from work allows the body to recover and reduces continuous exposure to heat. These factors are beneficial in mitigating the risk of heat exhaustion rather than exacerbating it.