Which of the following would NOT contribute to the development of a heat-related illness during exercise?

Frequent water breaks play a crucial role in preventing heat-related illnesses during exercise. Hydration is essential for thermoregulation, as water helps the body to sweat and cool down when temperatures rise. By ensuring that athletes take breaks to hydrate regularly, the risk of overheating and dehydration decreases significantly, thereby contributing to safer exercise conditions.

In contrast, conditions such as high humidity, wearing heavy clothing, and excessive exertion directly impair the body's ability to manage heat. High humidity makes it difficult for sweat to evaporate, which is a primary way the body cools itself. Heavy clothing limits heat dissipation and can trap heat, while excessive exertion increases the body's metabolic rate, producing more heat than the body can effectively dissipate. Together, these factors heighten the risk of heat-related illnesses, making frequent water breaks the clear choice that does not contribute to those risks.