Sleep deprivation affects mood, performance, and health. It is common among workers, students, adolescents, and police officers who may work long overtime hours. Drowsy driving from sleep deprivation leads to thousands of motor accidents and deaths each year. Health issues associated with sleep deprivation include diabetes, high blood pressure, and a weaker immune system. Coping strategies include caffeine, power naps, sleep medications, and getting extra sleep to make up for lost sleep.