For
your fourth challenge, you're going to pretend that you're in that
horror movie "A Quiet Place" as you get tucked in. If it gets too loud,
the sleep-gobbling monsters will attack.
Here's
a fun fact: We share a common trait with birds in that our brain
doesn't fully shut out sounds. You could call us bird brains, but it's
actually an evolutionary advantage because we can be semi-alert to
threats while we sleep. And it allows us to respond to our alarm clock
or crying baby.
But
our subconscious awareness of sound while sleeping also means we can be
easily awoken by a passing truck or a talkative bird in the tree
outside.
Your
assignment is, before bedtime, to try to identify and quell any
controllable sounds: smartphone pings, open windows, automatic coffee
maker alarms, even wind chimes.
As
for the noises you can't control -- the barking dog, your snoring
partner, the irritating noisy neighbor, and that (bleeping) bird that's
still chattering -- there are ways you can mask those, including
earplugs (which come in various types), noise-canceling earphones and
white noise machines.
White,
pink and brown noise machines and apps are popular because they absorb
the sound waves of little creaks and cracks that don't quite fully wake
you but may still disturb sleep. There isn't much actual science behind
how, why -- or even if – sound machines truly work, but experts say they
don't seem to be harmful -- unless you have an existing hearing issue.
You
can't get rid of all sound -- cue stupid bird -- but the more noise you
can muffle or stop in its tracks, the less opportunity there is to pull
you out of that lovely dream -- you know the one...
For more on the importance of dreaming, check out this episode of the Chasing Life podcast, in which CNN Chief Medical Correspondent Dr. Sanjay Gupta spoke with neuroscientist and dream expert Sidarta Ribeiro.