Warning signs of overheating and dehydrating The following are important signs to watch out for: feeling very hot, unwell and confused not being able to talk properly headache not perspiring, even when dancing heart rate or pulse not slowing down even when resting vomiting not being able to urinate, or noticing that urine is thick and dark fainting, collapsing or convulsing (having fits) If these symptoms start, then: stop dancing tell a friend and ask them to stay with you until you feel better ask your friend to get some cold water, and sip it slowly splash cold water onto your skin rest in a quiet, cool area fan your body If symptoms persist and your body doesn’t cool down, go to the first aid area of the venue or get to a hospital immediately.