Category: Everyday Science | Last updated: 2026-09-18

According to the National Sleep Foundation, what is the recommended average nightly sleep duration for adults aged 18-64?

A) 5-6 hours
B) 6-7 hours
C) 7-9 hours
D) 9-10 hours

Explanation

The National Sleep Foundation recommends 7-9 hours of sleep per night for most adults (18-64 years old) for optimal health and functioning.

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