Quiz – Caffeine Timing Sleep

Question 1 of 6

1. Question

What does caffeine block in your brain?

Adenosine receptors

Correct Incorrect Correct answer

Melatonin glands

Correct Incorrect Correct answer

Blue light

Correct Incorrect Correct answer

Muscle fibers

Correct Incorrect Correct answer

Question 2 of 6

2. Question

About how long is caffeine’s half-life?

About five hours

Correct Incorrect Correct answer

About five minutes

Correct Incorrect Correct answer

About fifty hours

Correct Incorrect Correct answer

About one hour

Correct Incorrect Correct answer

Question 3 of 6

3. Question

What afternoon cutoff does the capsule suggest for caffeine?

Two o’clock in the afternoon

Correct Incorrect Correct answer

Ten o’clock at night

Correct Incorrect Correct answer

Midnight

Correct Incorrect Correct answer

No cutoff needed

Correct Incorrect Correct answer

Question 4 of 6

4. Question

What chemical builds up during the day as a fatigue signal?

Adenosine

Correct Incorrect Correct answer

Cortisol

Correct Incorrect Correct answer

Melatonin

Correct Incorrect Correct answer

Insulin

Correct Incorrect Correct answer

Question 5 of 6

5. Question

Match each caffeine fact with its meaning.

Sort elements

Half remains hours after drinking
Reduces the sleepy feeling
Lets adenosine build for sleep
Personalizes the best timing

Half-life of about five hours

Correct Incorrect Correct answer

Blocks adenosine

Correct Incorrect Correct answer

Two o’clock cutoff

Correct Incorrect Correct answer

Individual chronotype

Correct Incorrect Correct answer

Question 6 of 6

6. Question

Fill in the blanks.

Caffeine blocks Fill in the blank 1 of 3 receptors and has a half-life of about five Fill in the blank 2 of 3 , so an afternoon Fill in the blank 3 of 3 helps protect sleep.