Final answer:
Luke's increased sleep needs during spring break can be explained by the restoration theory of sleep, which states that sleep helps the body recover from daily activities, especially after increased physical exertion like playing beach volleyball.
Step-by-step explanation:
Luke’s spring break sleeping behavior, where he needs more sleep after playing beach volleyball in the hot sun, is best explained by the restoration theory of sleep. This theory suggests that sleep is necessary for the body to recover and restore itself from the day’s activities. Since Luke is more active and is spending his days under the physical stress of playing volleyball in the sun, his body might require more sleep to recover from this increased activity. According to restoration theory, there would be a direct relationship between an individual's total sleep duration and their level of activity: the more physically or mentally demanding their day, the more sleep they would need to recover.
Homeostatic regulation of sleep would also play a role in Luke’s need for increased sleep. After periods of sleep deprivation or increased physical activity, individuals experience sleep rebound, where they tend to sleep more deeply or for a longer duration to make up for the lost sleep. This homeostatic drive helps maintain a balance in the body, underpinning the necessity of sleep for overall well-being and optimal functioning.