Quiz · What Sleep Really Does for the Brain

Question 1What is the main idea of this listening?

Why caffeine is a good replacement for sleep Sleep plays a vital role in keeping the brain healthy Students should study later into the night Modern culture correctly values hard work over rest

Question 2What does sleep give the brain a chance to wash away?

Old memories from the previous year Useless vitamin pills and minerals Toxic proteins that build up during waking hours Extra blood and oxygen from the cells

Question 3How does the speaker view the habit of proudly cutting sleep short?

As a clever way to save money As proof of true dedication to work As a habit caffeine can easily fix As a slow form of self-harm