Avoid stepping out of the house or going to sleep with wet hair as it may lead to health issues. While it is commonly believed that wet hair can cause colds or pneumonia, the direct association is minimal. Wet hair may lower body temperature, making one more susceptible to infections, but there is no concrete evidence linking wet hair to sickness. It is important to dry your hair thoroughly before sleeping to prevent issues like hair breakage, disrupted sleep, weakened immune system, bacterial growth, and dandruff.Maintain a warm and dry sleeping environment to reduce the risk of infections and other hair-related problems.