Extreme heat exposure is the leading weather-related cause of death in the US. Adults need to pay special attention to children during extreme heat because they are less able to regulate temperature. Extreme heat can also have significant impacts on pregnancy outcomes, so make sure to stay cool! Symptoms of heat-related illness include headaches, muscle cramps, fevers, excessive sweating, dizziness or confusion, and may need medical attention. Heat-related illnesses, like heat exhaustion or heat stroke, happen when the body is not able to properly cool itself. Usually, the body normally can cool itself by sweating, but during extreme heat, this might not be enough. In these cases, the body temperature rises faster than it can cool itself down. This can cause damage to the brain and other vital organs. Pregnant women are at greater risk for heat exhaustion and heat stroke than non-pregnant women.