Final answer:
Sunscreen does not prevent the body from overheating, making options A, B, and D more effective for preventing heat stress and stroke. Hydration and proper rest are crucial for thermoregulation during physical activities.
Step-by-step explanation:
Which of the following is not an effective way to prevent heat stress and stroke? The correct answer is C. Wear a minimum of SPF 15 sunscreen. While sunscreen protects against sunburns, it does not prevent the body from overheating, making it less effective against heat stress or stroke compared to the other options.
Evaporative cooling through sweating is a key natural mechanism to regulate body temperature. Wearing loose-fitting clothing, as mentioned in option B, facilitates this process. Taking breaks as indicated in option A, and staying hydrated as mentioned in option D, are essential strategies for managing heat and maintaining thermal balance. Understanding these techniques is important for those engaging in physical activities to prevent overheating and the detrimental effects of high temperatures on the body.
It's important to note that while SPF sunscreen is essential for skin protection, it does not contribute to the body's thermoregulation during workouts or physical exertion, emphasizing the importance of proper hydration and adequate rest during activities.