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Sleep Smarts Quiz: Myth or Fact?
Test your sleep knowledge with this myth-or-fact quiz that reveals the truth behind common sleep beliefs.
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By
Lana Pine
| Published on December 13, 2025
Credit: Adobe Stock/Julia

Sleep affects nearly every aspect of our health, from mood and memory to heart health and immune function. But despite how important it is, many common beliefs about sleep are outdated or just plain wrong. Our “Sleep Smarts: Myth or Fact?” quiz challenges what you think you know about sleep science, circadian rhythms and healthy nighttime habits.
Myth or Fact?
You can train your body to function well on five to six hours of sleep.
