How Screens Affect Your Sleep

What hormone is mainly responsible for making us feel sleepy?

• Cortisol

• Melatonin

• Serotonin

• Adrenaline

What kind of light does a phone screen typically emit?

• Warm light

• UV light

• Blue light

• Red light

What is one of the key reasons phones disrupt our sleep?

• They're too loud

• They use up our energy

• They emit blue light that suppresses melatonin

• They reduce oxygen levels in the room

What feature do many phones have to reduce blue light exposure at night?

• Sleep Mode

• Warm Vision

• Night Shift

• Dark Filter

According to research, how effective is Night Shift at preventing melatonin suppression?

• Very effective

• Slightly helpful

• Not effective at all

• Not significantly effective

What factor makes light more powerful when using your phone?

• Volume

• Battery percentage

• Distance from your eyes

• Phone model

How does the body react to sunlight in the morning?

• Increases melatonin

• Decreases melatonin

• No change

• Increases cortisol only

What light temperature is typical for sunset lighting?

• 5600 Kelvin

• 4000 Kelvin

• 3000 Kelvin

• 2000 Kelvin

What strategy can help reduce the impact of nighttime screen use?

• Eating before bed

• Exercising before sleep

• Getting bright natural light in the morning

• Drinking coffee in the morning

Besides light, what else can affect how screens disrupt sleep?

• Screen size

• The type of phone

• The content you're viewing

• Whether it's in airplane mode