When Marlon gets adequate sleep the night before his intramural basketball games, he has more energy and can run faster and perform better. This can be attributed to
A) cognitive ability being restored during sleep.
B) increased body temperature and caloric expenditure during sleep.
C) increased brain activity during sleep.
D) conservation of body energy during sleep.
Question 2
According to research, immune function is increased in adolescents who
A) get 7 hours of sleep a night.
B) get 8 hours of sleep a night.
C) get 9 hours of sleep a night.
D) get more than 9 hours of sleep a night.