Students can improve their bedroom environments to enhance how fast they fall asleep and better their sleep quality. Studies have shown that outside noise from traffic, students in dorms near them, or warmer temperatures within the bedroom negatively affect sleep.[44] Another negative factor is the presence of outside light, which tricks our brain into thinking it is nearing daytime.[45] It is possible for students to control these factors by changing the thermostat, blocking out sound, and darkening the bedroom.