Quiz · The Body Clock Explained

Question 1What is the main topic of this listening passage?

How to build a clock in a laboratory The long history of shift work How the body's internal clock works and affects health Why morning exercise beats evening exercise

Question 2What is the strongest signal that resets the internal clock?

The evening release of melatonin Bright phone screens at night A regular weekend routine Natural morning light

Question 3What does the speaker suggest about improving sleep habits?

Small consistent improvements are valuable Only perfect routines make any difference A degree is needed to understand sleep Shift workers should simply change jobs