Hello, they some experts say Sleeping naked allows the heat to release more quickly, and helps you fall asleep faster . The study also showed that the regulation of in-bed body temperature could significantly help in getting a deeper sleep for longer periods of time. Natural body cooling at night helps you lower your cortisol levels. But which may lead to some other problems including family circumstances, privacy issues etc.. , doing meditation, drinking enough water, not taking worries to bed, and sleeping in a well ventilated room is always better than sleeping naked