You know that whole thing about drinking eight glasses of water a day? Sorry to have to tell you this, but it may not do you as much good as you think. It won’t make your skin brighter. It won’t make you feel more clearheaded. It won’t make you more energetic. It will, however, make you have to pee a lot. After all, your body can’t take that much water, so it needs a way to get out.

Most of the time, your body will tell you when you need to drink water, because you have these wonderful, amazing, undervalued things—kidneys(肾). Every day, the blood in your body passes through the kidneys. What you eat and drink, the temperature around you, and how much you exercise—all of these do something to your body. Your kidneys，with your nervous system(神经系统) and different kinds of hormones(荷尔蒙), care about what your body needs and keep the balance of your body.

For example,after exercising for a long time, you may sweat a lot, so you’re losing water from your blood. The kidneys know your blood volume(容量) is going down and the blood is getting saltier(含盐量更高). They want more water back into the blood to keep the balance. So they will give you a sign to drink, which means you will get thirsty. If you don’t have enough water, the thirst message will get stronger and stronger.

A lot of people may say that they don’t drink much water, but here’s a point that’s often missed: there is water in every single thing you put in your mouth. Your morning milk has water, so does you breakfast. And that snack—an apple, an orange, or a glass juice, just like you, is made of water too.

     ▲     

A．

B．

C．

D．

During this special festival holiday in China, everyone will wish you a great health and a lot of happiness. It’s so happy to get together with families and friends. Food is everywhere, whether family events or dinner parties. Having big meals so many days will make you unhealthy. Nothing is more important than the health. How can you get both of them?

Plan your day in the morning and think about some healthy food you want to eat. If you are going out for lunch or dinner, watch the menu (菜单) ahead of time so you can get an idea of what you may order.

Eat healthily most of the time. The holiday is about enjoying. But to your favorite foods, my suggestion is not eating them all at once. Plan for one treat a day and this way you will have something to hope for.

Drink more water. Water can clean your body. You can also get water from fruits, vegetables and soup. Keep away from cola and coffee. I suggest keeping a water bottle in your case.

Keep moving. This is really a busy time of year, but you still should try to do some kinds of exercise. You can choose to go for a swim or exercise outdoors.