There are many kind of stress in our daily life. How to manage stress is so an important problem that we had to deal with it properly. I think stress itself doesn’t exist. It’s why we consider things to be bad and regard all of them as our own fault and won’t forgive us. And then stress comes out. As we all know, there is nothing you can achieve with error. So it’s impossible to expecting everything to be perfectly. If we have done our best, though not successful, but there is nothing to regret. And we don’t need blame ourselves continuously. Then we will feel the stress less. We will stay healthy and do well in the future.

   Even if your school provides healthy foods，it can be easy to give in to your desire（渴望）and pick a less healthy choice when you are feeling really hungry. How do you take control of it？【小题1】 Here are a few reasons for you to pack your lunch or snacks at least twice a week:

Do you ever wait in the lunch line only to find that when you get to the front，you don’t like what they are serving？So you reach for pizza again. 【小题2】 Bringing your own lunch also lets you control exactly what goes into the food you eat.

It does not hurt to enjoy an occasional（偶尔的）serving of pizza and hot dogs. 【小题3】 A packed lunch a couple of times a week means you can enjoy some favorites you might not find at every school—like your mom’s chicken soup or some crisp apples.

If you have a big game or activity after school，plan a lunch and snacks that combine lean proteins with carbohydrates（糖类）. 【小题4】

Pack healthy snacks so you don’t feel tempted to step off campus for a fast—food lunch，or hit the corner store for a chocolate and a soda！Put the money you save on such snacks aside.

In a word，whether you pack your lunch or eat in the cafeteria，what is important is that you make healthy choices. If you are concerned that your cafeteria does not offer enough healthy options，get involved in trying to make changes. 【小题5】

   With an improved economy，many travelers have been buying first or business class seats，leaving fewer for upgrades（升级）.Here are some strategies for getting a free upgrade.

1. Fly a lot.

This is the most common way to earn a free upgrade. Most airlines reserve some spaces for travelers who fly at least 5，000 miles per year. Five years ago，this meant half or more of domestic（国内的）first class travelers sat up front for free. But now，airlines are selling more high-price seats，so on popular routes it is not unusual for more than 20 travelers to compete for one or two upgrades. But on routes with fewer business class travelers，free upgrades remain more plentiful.

2. Use miles.

If you're not a frequent traveler but still have some miles to fly，you may be able to use them for an upgrade. Be careful，though，as many airlines now ask not just for miles but also a cash co-pay. One example: on flights to Europe，American Airlines charges 5，000 miles，plus $110，for a one-way upgrade from discounted economy class to business class. For most domestic upgrades，American Airlines wants 15，000 miles plus $ 75.

3. Get lucky.

Sometimes airlines overbook coach（经济舱），and a few travelers get no seats. Agents try to ensure the airline's most loyal travelers get the nod（被选中）. Agents usually have some flexibility to make sure the plane is full and takes off on time. So it's the easiest way for them to do it-they might upgrade someone else out of order.

4. Save a life.

Flight attendants don't usually upgrade passengers, even when empty seats remain. Doctors and nurses who answer an emergency call are sometimes an exception. If they comfort a passenger, flight attendants might allow them to sit in business or first class for the rest of the flight.

   Everyone sleeps. However, taking the time to develop a sleep habit is probably the last thing on your mind and some sleep advice simply can't be forgotten. 【小题1】.

Watch TV until you fall asleep

It has nothing to do with what you watch-TV news isn't a better pre-sleep choice than TV series. 【小题2】. The bright light keeps you awake all night. So even if you nod off（in front of the TV, for example）,you probably won't stay asleep for long.

Sleep with pets

【小题3】. They get comfortable, and then they move. This goes on all night, and whether you admit it or not, it interrupts your ability to get the level of sleep needed to feel rested.