Scientists wanted to see how body temperature changes can impact DNA floating in the blood. They looked at two ways to heat up the body: from outside (like a warm bath) and from exercise. First, they thought about how DNA in the blood changes when the body gets warmer. They wondered if this DNA could show how the body reacts to heat. They did tests on young, health...

Ever wondered how our bodies adapt to heat? A recent study explored this by tracking the changes in the amount of skin covered in sweat over seven days of heat acclimation. Nine adults, with both men and women, were put through a heat test every two days. They cycled for two hours in a hot, humid room. The heat and humidity were gradually increased until their bodies...

Your body works overtime to keep you cool by sweating, which cools you but also uses a lot of energy. If cooling isn't effective, it can lead to heat exhaustion or heatstroke, serious medical issues. Dehydration from sweating and not drinking enough water is another reason for post-sun tiredness.