The body heat fluctuates during extreme temperatures, and it tends to rise especially in hot, humid conditions. Athletes and people who work out know that in hot conditions the body heat tends to rise, and they are prone to excessive sweating. To help control body heat, you need to drink lots of fluids to keep the system cool. Natural fresh water is ideal and should be drunk as much as possible. Water helps to flush out toxins from your body and help bring down the body heat. Vegetable and fruit juices can be consumed by those who are averse to drinking too much water. Have a nice cold shower to lower your body heat, and check for any food intolerances that can lead to body heat.