Sean Becomes Very Sleepy by Late Afternoon Most Days and Thinks

Multiple Choice

Sean becomes very sleepy by late afternoon most days and thinks he should make time to fit in a nap. Before including a daily nap in his schedule, he should consider which of the following to ensure that he actually benefits from it?

A) The time of day and length of the nap
B) His need for caffeine in the afternoon
C) His accumulated sleep debt
D) His body weight and tendency to snore