This is how long your good night's rest should be, says the National Sleep Foundation

A "good night's sleep" isn't a one-size-fits-all phenomenon, acknowledges the National Sleep Foundation. The organization has conducted a "scientifically rigorous update" to its sleep guidelines for different age groups, adding new sleep categories and refining recommendations for certain groups. Here's what you should aim for when you or your child hits the hay:

— Newborns up to 3 months: 14-17 hours daily

— Infants (4-11 months): 12-15 hours

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— Toddlers (1-2 years): 11-14 hours

— Preschoolers (3-5 years): 10-13 hours

— School-age children (6-13 years): 9-11 hours

— Teenagers (14-17 years): 8-10 hours

— Younger adults (18-25 years): 7-9 hours

— Adults (26-64): 7-9 hours

— Older adults (65+): 7-8 hours

And no, you workaholics, a few naps here and there won't knock down that sleep deficit, as CBS News explains. — Mike Barry