The specific amount of sleep needed varies from person to person.

Here’s a breakdown of the recommendations for each age group:

1. adults 65 and up: 7 to 8 hours
2. adults 26 to 64: 7 to 9 hours
3. adults 18 to 25: 7 to 9 hours
4. teens: 8 to 10 hours
5. school-age children: 9 to 11 hours
6. preschoolers: 10 to 13 hours
7. toddlers: 11 to 14 hours
8. infants: 12 to 15 hours
9. newborns: 14 to 17 hours