2 . Smartwatches and fitness trackers (健身追踪器) have gained popularity recently. These tools can record your daily steps, heart rates, etc.     1    . If yes, it might be a sign that you’re addicted to your fitness tracker.

    2    . If you keep setting unrealistic daily goals that involve working out for too long, and if you begin to ignore friends and responsibilities to make time for your workout, then you’re most probably addicted to your fitness tracker.

It’s a struggle to overcome the addiction to fitness trackers.     3    . For example, the number in your smart watch showing how far you’ve come can give you a sense of achievement.

Of course, failing to meet your daily goal can be discouraging. You might focus on your shortcoming rather than your progress. Another problem is that you might find yourself paying too much attention to the step number rather than how your body feels.     4    .

Therefore, if you’re spending too much time looking at your smartwatch, limit your daily step count to a comfortable level.     5    . For example, concentrating on your hobbies or socializing with friends can be a great way to keep your mind on other things.

3 . Here are some habits to help you enjoy a longer and better life.

Eat better. You don’t have to adopt some crazy diet or give up all sweets. Instead, try to eat a few more vegetables and fruits.     1     . A whole food is an ingredient in its natural state, one that comes in its own wrapper. While it’s even better to eat cuisine that is organic, locally grown or pesticide-free, start by shopping for groceries that require no packaging.

Check with your doctor. When you feel good, it’s easy to avoid going to the doctor. No matter how you feel, though, it’s a good idea to visit your doctor for an annual check up.     2    . In addition, depending on your age and family history, the doctor may recommend other necessary tests or screenings. For example, your doctor may also do blood tests to check your cholesterol or screen for hormonal imbalances.     3    

Keep moving. Exercise lowers blood pressure, controls our weight, strengthens our bones and muscles, reduces our risk for cancers, and improves mood. Some research also says it has the power to keep us young. Physical activities including exercises can improve our flexibility, strength and balance.     4     Just work more movement into your day.

    5    . Simply said, we are better together. Steps to build a social network include getting involved with joining a cause or volunteering for an organization or checking out a support group.

5 . Teenagers’ fitness is now a major concern，and physical exercise is very important. It reduces stress and improves fitness. Exercise makes your body strong，and helps you to keep the right body weight. Sports scientist Dr. Helen Lopez offers the following advice to teenagers：“First，you need to find out your present level of fitness. Then you can design a programme that will help you become healthier.”

Dr. Lopez suggests that there are three levels of fitness that need a change of lifestyle.“Overweight”means that the person gets very little exercise and often has a serious weight problem. “Inactive” means that the person does not join in many physical activities，but is not seriously overweight.“Active”refers to people who take part in sports and other physical activities，but do not have a high fitness level.

According to Dr. Lopez，overweight teenagers should work out to keep healthy.“Ride a bike，play volleyball or basketball for a while，and go for a twenty­minute walk each day. All these will help to burn calories.”Inactive teenagers should do similar activities, but add some bending and stretching exercises, such as push­ups and sit­ups, starting with twenty of each a day.“Inactive people can take a little more exercise than overweight people because their bodies are stronger，”Dr. Lopez said. The same rule applies to active teenagers.

Dr. Lopez suggests one hour a week or more on running and other forms of intensive exercise，together with fifteen minutes a day spent on stretching and bending activities.“These are really important in order to prevent injuries,” Dr. Lopez said. Some weight­training and other body­strengthening exercises could also be planned in the programme in order to increase the person’s strength.

7 . Are you sometimes a little tired and sleepy in the early afternoon? Many people feel this way after lunch. They may think that eating lunch is the cause of the sleepiness. Or, in summer, they may think it is the heat (热). However, the real reason lies inside their bodies. At that time—about eight hours after you wake up - your body temperature goes down. This is what makes you slow down and feel sleepy. Scientists have tested sleep habits in experiments where there was no night or day. The people in these experiments almost always followed a similar sleeping pattern (模式). They slept for one long period and then for one short period about eight hours later.

In many parts of the world, people take naps (小睡) in the middle of the day. This is especially true in warmer climates (气候), where the heat makes work difficult in the early afternoon. Researchers are now saying that naps are good for everyone in any climate. A daily nap gives one a more rested body and mind and therefore is good for health in general. In countries                    where naps are traditional (传统的), people often suffer less from problem such as heart disease.

Many working people unfortunately, have no time to take naps. Though doctors may advise taking naps, employers do not allow it! If you do have the chance, however, here are a few tips about making the most of your nap. Remember that the best time to take a nap is about eight hours after you get up. A short sleep too late in the day may only make you feel more tired and sleepy afterward. This can also happen if you sleep for too long. If you do not have enough time, try a short nap - even ten minutes of sleep can be helpful.

As for how to stay healthy, health experts give us some helpful suggestion. Firstly, we must keep a balancing diet in our daily life. We should avoid the food what is rich in fat and sugar. We'd better having more fresh vegetables and fruits that are in great benefit to us. Secondly, taking exercise every day help build a strong body. As it is known to us, working out on a regular basis plays important part in keeping us healthy. Finally, making sure we have enough sleep to keep us energetic and happy. By eating well, exercising regular and having enough sleep, we can keep our bodies healthy.

I am sorry to hear that you are upset because you were too fat at present. I have learned how to lose the weight for a long time. I will give you some advices. First, it is necessary to spend one hour a day in working out regular; try to walk instead of take a bus. Second, develop a good eating habit, what helps you keep a healthy body. When they are stressed, try to relax yourself by listening soft music. Finally, never stay up too late or make sure you get enough sleep. Hopefully, you can live a much good life than before.

10 . The eyes are the windows of the soul. Having a pair of bright, clear eyes is very important, so we should protect our eyes throughout our lives.

    1    . Don’t read while lying down or walking. Relax after every hour of reading.

Keep a distance from the TV set when you watch TV and give your eyes a rest every 30 minutes.

Don’t stare at the sun or try to read in the darkness.     2    . This can damage your eyes easily.

Get your eyes checked often. Not many people have this habit, but it is necessary. If you feel that there is something wrong with your eyes, get them checked quickly.     3    .

    4    . You can close your eyes for a few seconds or look into the distance for one or two minutes. A small break will relax your eyes and help to stop you from getting eye problems.

Be careful when you choose your glasses.     5    . Make sure your glasses are right for you. If they don’t feel right, get your glasses changed.