10 Things Heat Does to Your Body While You Sleep During a Heatwave

Europe and the UK have experienced record-breaking temperatures, leaving millions struggling through unusually hot nights. While most people know that heat makes it harder to fall asleep, fewer realize what happens inside the body after they finally drift off.

Your body depends on a slight drop in core temperature to enter deep, restorative sleep. When your bedroom stays too warm, that natural cooling process is disrupted, placing extra stress on multiple body systems throughout the night.

Health experts warn that prolonged exposure to hot nights can affect everything from hydration to cardiovascular health. 

Here are 10 surprising ways extreme nighttime heat affects your body while you sleep.