Two of the most avoidable risks from cocaine are overheating and dehydration. Cocaine raises your pulse, blood pressure and body temperature. Combined with increased levels of physical exertion, such as dancing, this can lead to a dangerous increase in your body temperature, especially in hot environments. Nightclubs can be hot places and dance oors often have really bad ventilation. Taking a break from dancing and getting off the dance floor for 10 minutes every hour or two will help you avoid overheating.