An information processing method causes a server to acquire a stimulus control pattern for controlling a stimulus that one or more devices give to a first user to induce the first user to fall asleep or wake up, to acquire a sleep state of a second user who is in the same space in which the first user is, to adjust the acquired stimulus control pattern, based on the sleep state of the second user, and to control the operation of the one or more devices, according to the adjusted stimulus control pattern.