Screen Time/Body's "Clock"

What does our internal "clock" do?

• helps regulate when we eat, sleep, and wake.

• wakes us up with an alarm

• helps us regulate our emotions

What happens when our brains start to produce melatonin?

• prepares the body for eating

• prepares the body for sleep.

• prepares the body for waking

What did the researchers compare in their study?

• the effects of reading on an phone for four hours before

  bedtime to the effects of reading a printed book.

• the effects of reading book for four hours before

  bedtime to the effects of playing a video game.

• the effects of reading on an iPad for four hours before

  bedtime to the effects of reading a printed book.

According to one researcher, how does being exposed to natural light help your body?

• It can reduce (help) the body’s sensitivity to artificial light at night.

• It can increase (not help) the body’s sensitivity to artificial light at night.

• It has no effect on the body's sensitivity to artificial light at night.

When does our body start to produce melatonin?

• about 30 minutes before bedtime

• about 2 hours before bedtime

• about 2 hours before waking up

Which is an example of natural light?

• sunshine/being outside

• ipad screen light/inside

What is an example of "artificial light"?

• sunshine/being outside

• ipad or iphone screen/inside

Turning on a very bright light to read at night can be just as bad as reading on a phone/ipad.

• True

• False

We can infer that melatonin is essential to getting plenty of rest at night.

• True

• False

This type of sleep is harder to get for those who fall asleep reading from a screen.

• REM (rapid eye movement)

• MRI (movement of rapid intensity)