“Mirror, mirror on the wall, what will I look like in ten years? Will I look pretty if I eat less junk food and exercise more?”

To get the answers, you might need a special mirror. French scientists have invented one. In this mirror, you won’t see what you look like today. You will see what you'll look like in the future.

“The mirror looks just like the one in your bathroom, but with two differences,” says Martin Illsley, one of the scientists.

First, it has a camera to take your pictures. You also need to tell the mirror what you eat and how you exercise. Then, with that information, special software in it will create a future vision(形象)of you on the mirror.

What can bad habits do to you in five or ten years? This mirror may just show you. If you don’t want it to become real, give up your bad habits right now!

The teenage years are an important time for teenagers to grow in bodies and minds. The teenage years are also a time when teenagers form habits that can last a lifetime. Here are some pieces of healthy living advice for teenagers to follow.

Eat Your Fruits and Vegetables

Scientists suggest that teens should get at least five kinds of fruits and vegetables each day. Fruits and vegetables provide（提供）important vitamins teens’ bodies need to grow well. Eating a diet high in fruits and vegetables also helps keep teens full without providing more calories that can lead to overweight.

Get Your Body Moving

Exercise does more than just burn calories. Taking part in sports helps keep the heart strong and improves feelings. According to the Kids Health, a website presented by the Nemours Foundation, teens should take part in at least 60 minutes of exercise every day.

Watch What You Drink

Teens’ bodies are almost two-thirds water, so drinking enough water is important. Teenagers should drink 8 glasses of water every day, according to the British Nutrition Foundation. That number grows for teens who take part in sports or are especially active. Other good drinks include（包含）100 percent fruit juice and low-fat milk. Sugary drinks should be limited or excluded from the meals completely as they provide more sugar and empty calories.

Get Enough Sleep

According to the scientists, teenagers need at least nine hours of sleep each night. Teens should also have at least an hour of “quiet time” before bedtime. The goal is for all phones or computers to be turned off for the night so that the brains and bodies can get relaxed. Quiet time activities may include listening to soft music or reading a book.