In the United States, more than 64 million people say they
sometimes have trouble falling asleep at night. It can be difficult to sleep in
a bed away from home, as you can find in a hotel or on a plane. A sleep mask
can make it easier for you to fall asleep when you are in a strange area. At
night, the brain produces a chemical called melatonin that helps us fall
asleep. A sleep mask, sometimes called an eye mask, can make the brain think
it's dark, which makes it easier to fall asleep.
You need darkness for your natural sleep cycle to occur.
Your eyes contain special receptors that notify your brain when light levels
start to drop. These signals cause your brain to convert serotonin, a chemical
that helps you stay alert, to melatonin, the chemical that lets you relax and
fall asleep.
If you cannot reach the deep sleep level where you
experience rapid eye movements or REM, you will not be able to do your best.
Regular sleep helps you be more relaxed, boosts your immune system, and keeps
you clear and productive throughout the day.
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