Are you one of those people who thrives on five hours of sleep and coffee? Do your kids resist settling down at their scheduled bedtime and wake up groggy? Recommendations from the Sleep Foundation reveal exactly how much rest people need at every age. The 2015 study does take into account the fact that some children and adults may require slightly more or less than the average (see the "May Be Appropriate" sections of the chart), but the core range, with a minimum and maximum amount of sleep per night, should serve as a general guideline. So even though your toddler may seem fine on seven hours a night and no nap, or your teen may insist she needs 15 hours to feel alert, don't believe it!

Here's the breakdown:

Newborns (0–3 months): 14–17 hours a day

Infants (4–11 months): 12–15 hours a day

Toddlers (1–2 years): 11–14 hours a day

Preschoolers (3–5 years): 10–13 hours a day

School-age children (6–13 years): 9–11 hours a day

Teenagers (14–17): 8–10 hours a day

Younger adults (18–25): 7–9 hours a day

Adults (26–64): 7–9 hours a day

Older adults (65+): 7–8 hours a day

Our takeaway? Since the grandparents can get by on less sleep, put them on morning kid duty when they visit so you can catch an extra hour or two of shut-eye!

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