 Our bodies are designed to operate at a temperature somewhere around 98.6 degrees. But when the body temperature gets too hot, the machinery in the individual cells stops working. And that causes a whole bunch of problems that lead to sickness and even death. He said if you're overheating, get out of the direct sunlight. Oftentimes, people who are having heat problems are also dehydrated. As long as you're not losing consciousness or not unconscious, drinking cold water is