Primary ages 6-13 years -Hours of sleep at a reasonable hour is 9-11. -Can sleep less than 9 hours approximately 1-3 hours a day (7-8 hours). -Can sleep 11 hours approximately 1 hours (12 hours).
- hours of sleep is the most suitable 9-11 H - can sleep less than 9 hours approximately 1-3 hours. (7-8 hours) - can sleep more than 11 hours approximately 1 hours (12 hours).