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  3. Sleep Hygiene

Sleep Hygiene Articles

3 articles

  • Sleep

    How Much Caffeine Is Too Much in a Day?

    Learn what 400 mg of caffeine per day really means, how to total coffee and energy drinks, and when a lower limit may be wiser. 12 min read Updated October 27, 2026
  • Sleep

    How Long Should You Nap? Best Length and Timing

    Learn how long a nap should last, compare 10–20 minutes with 90 minutes, and understand sleep inertia, timing, and the limits of nap timers. 14 min read Updated October 18, 2026
  • Sleep

    How Much Sleep Debt Do You Have? Recovery Guide

    Calculate your weekly sleep deficit, understand why recovery is not hour-for-hour, and learn practical ways to improve sleep without relying on weekend catch-up. 15 min read Updated October 17, 2026
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