Here's why you don't sleep well in a new place

Story highlights

  • Half of your brain may stay awake to keep you safe from danger in a new environment
  • Birds sleep with one eye open and can turn off half their brain to get some rest

(CNN)Do you struggle to fall asleep and/or stay asleep when you are on the road? Don't blame your pillows or the sheets. Instead, blame your own hyper-vigilant brain.

It appears that half of our brain may remain alert when you sleep in a new location, at least on that first night you are away from home, according to a study published in the latest edition of Current Biology.