Asiatic elephants, at least in thailand, cannot stand the heat of the sun during the hot hours. They usually try to stay in cool shady spots in the dense jungles in the day time. Some of them sleep while standing up, with their ears fanning and their heads nodding from time to time. The body also sways from side to side slowly but continuously while the elephant is sleeping, so that the weight of the body will not be no either set of legs for too long a time.