How do you remember the way to your house? Where do dreams come from? It is your brain   that does these things. A British scientist showed that "sleep can improve one's memory." It's not a dream for students to study when they sleep. In fact, your brain is working day and night. If you learn words before bed, a certain part of the brain may help you to remember the words while you sleep. What's more, another scientist in the USA found that there was a "talent button  " in the human brain. It might make a person more talented. There are more interesting things about the brain. Your brain uses less energy than a fridge light. Just two bananas can give the brain enough energy to work for a whole day. According to some scientists, yawning   keeps our brains "cool", which makes us think quicker. Here are some pieces of advice to keep a good brain: Eat healthy food. Get a lot of playtime or exercise. Don't drink or smoke. Use your brain a lot. Which of the following is TRUE according to the passage?
Our brains only work in the daytime. Our brains need much energy every day. Smoking can keep our brains healthy. Getting exercise is good for our brains.