Why Many Experts Advise Against Sleeping With the Window Open at Night

How Temperature Changes Disrupt Your Sleep

Your body works hard at night to maintain a stable internal temperature.

That stability is essential for deep, restorative sleep.

When you sleep with the window open, outside air doesn’t stay consistent.

  • Temperatures drop suddenly after midnight
  • Cold drafts move across your body
  • Humidity can shift without warning

Even if you don’t wake up fully, your nervous system notices.

Your sleep becomes lighter, more fragmented, and less refreshing.

Many people wake up feeling tired without knowing why — and the open window is often the silent culprit.

But temperature isn’t the only issue drifting in through that window.

Read more on the next page ⬇️⬇️⬇️