Sleep

Daytime naps: when they help and when they hurt

A short afternoon nap can boost alertness, but long or late naps can worsen insomnia. How to nap smartly and when sleepiness signals a problem.

Dr. Kuldeep Budania, MBBS, MD Psychiatry

Updated 11 October 2026 · 3 min read

Naps are part of many cultures and can be healthy when timed well.

Needing long naps every day, however, may point to poor night sleep or a medical issue.

Key concepts

  • Best nap: 20–30 minutes, before 3 pm
  • People with insomnia should usually avoid naps
  • Excessive sleepiness is a symptom, not laziness

Symptoms and signs

  • Grogginess after long naps
  • Difficulty sleeping at night after evening naps
  • Falling asleep unintentionally during the day

Causes

  • Short or broken night sleep
  • Boredom and inactivity
  • Depression, sleep apnoea or thyroid problems

Risk factors

  • Older age and retirement
  • Shift work
  • Sedating medicines

Evidence-based management

  • Keep naps short and early; set an alarm
  • Replace evening naps with a short walk or light activity
  • Improve night sleep first if naps are long

When to seek professional help

  • Daytime sleepiness affecting work, study or driving
  • Sleeping much more than before along with low mood
  • Sudden sleep attacks or collapse with emotion

Frequently asked questions

Is sleeping a lot a sign of depression?

It can be. Oversleeping with low mood and loss of interest needs assessment.

Are naps good for elderly people?

A short nap is fine; long daytime sleep can disturb night sleep and should be discussed.

Medical references

Guidelines and official sources used for this article.

  1. Behavioral and psychological treatments for chronic insomnia disorder in adults: an American Academy of Sleep Medicine clinical practice guideline. Journal of Clinical Sleep Medicine, 2021.
  2. LIVE LIFE: an implementation guide for suicide prevention in countries. World Health Organization, 2021.
Author
Dr. Kuldeep Budania, MBBS, MD Psychiatry
Medical reviewer
Dr. Kuldeep Budania, MD Psychiatry
Last reviewed

This article is for general information and is not a substitute for personal medical advice.

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