Question

1. how long before bedtime should you power down your devices? *

a) 30 minutes
b) 2 hours
c) 1 hour
d) 45 minutes

1. what is not mentioned as a potential effect of poor sleep? *

a) decreased sports performance
b) changed mood
c) better focus
d) feeling tired

1. which of these devices should be turned off at night? *

a) only smartphones
b) only gaming consoles
c) only tablets
d) all electronic devices

Explanation:

Question 3

To determine how long before bedtime to power down devices, we refer to sleep hygiene guidelines. Blue light from devices can disrupt sleep, and it's recommended to power down devices 30 minutes before bedtime.

We analyze each option: Poor sleep typically causes decreased sports performance (A), changed mood (B), and feeling tired (D). Better focus (C) is not a result of poor sleep; in fact, poor sleep impairs focus.

For good sleep hygiene, all electronic devices (smartphones, gaming consoles, tablets) should be turned off at night as they emit blue light and can disrupt sleep. Options A, B, and C are too limited.

Answer:

A) 30 minutes

Question 4