Heat-related illness Eat or drink foods and fluids that contain sodium and electrolytes, such as commercially available sports drinks, during strenuous exercise. Avoid sitting or standing in one place for too long in the heat. Flex or contract muscles frequently while standing to assist venous return to the heart. Take frequent rest breaks and avoid strenuous activity at the hottest time of the day.
Lightning strike Pay attention to weather forecasts when participating in outdoor activities.
If you hear thunder, seek shelter in a building or enclosed vehicle. Lightning can strike even when the sky is clear. Also avoid entrances to caves and small, isolated sheds. A forest of densely spaced trees offers more protection. Avoid touching or standing near metal objects, including metal fencing, golf clubs, and bicycles.