1 . Social media and stores are full of products that promise perfect skin. Increasingly, these products are being marketed not just to adults but to teenagers. Many are benign (无害的), but some can cause skin irritation — and can be costly. Doctors alert for the most part teenagers do not need specialized skin products, especially expensive ones.     1     .

When their doctor recommends it. If your child has a skin condition that is being treated by a doctor, such as eczema or psoriasis, over-the-counter skin products may help.     2     .

If they have dry and/or sensitive skin. Again, fragrance-free cleansers are a good idea.     3     . If you have questions, or if the products you are buying aren’t helping, check in with your doctor.

    4     . It’s pretty rare to go through adolescence without a pimple. Many teens aren’t bothered by them, but if your child is bothered by their pimples or has a lot of them, it may be helpful to buy some acne products at your local pharmacy.

If your child has normal, healthy skin yet is asking for specialized skin products, inquire about their reasons and assure them of your support in addressing any potential skin issues.     5     . This is an important conversation to have, whether or not your child is dying for the latest cleanser they see on Instagram. Helping your child see their own beauty and strengths is a key part of parenting, especially for a generation raised on social media.

8 . Did you know many adults sit down for more than nine hours a day? Maybe you’re one of them! Whether it’s working at a desk, sitting motionless in a car, bus or train or lounging on the sofa watching TV, we have a much more sedentary lifestyle than our parents and grandparents did. The question that this raises is just what it is doing to our bodies.

The news isn’t good. A study carried out in the 1950s compared bus drivers with the conductors, who walked around the bus selling tickets. It showed that drivers, who spent many hours sitting at the wheel, were twice as likely to have heart attacks than the more active conductors. In fact, prolonged sitting has been associated with a number of different conditions, even in people who otherwise take regular exercise. If you sit down all day, you burn far fewer calories than someone with a more active job. There are suggestions that its lows your metabolism (新陈代谢) and makes it harder for your body to regulate blood sugar levels increasing the risk of diabetes.

One possible answer to this problem is for desk workers to use standing desks, to spend at least part of their day on their feet. One small study showed that office workers who stood for three hours after lunch had a much smaller increase in blood sugar levels, while another suggested that by standing for three or four hours a day over the period of a year, people would burn as many calories as if they had run ten marathons.

Other experts question this figure and point out that standing all day can also have negative impacts, such as leg or back pain, recommending that if people do want to use standing desks, they should gradually increase the amount of time that they spend on their feet. Crucially, they also point out that there are many alternatives to sitting, and that their impact is unlikely to be the same; walking, for example, burns far more calories than standing.

9 . Many studies have now showed that there is an increased risk of heart attacks and high blood pressure associated with a lack of sleep.     1    .  

Do get the required sleep. As parents, they should ensure their kids get enough sleep on a regular basis each week. As we know, most adults need seven to nine hours of sleep daily to perform well the next day.     2    . So making them get the right amount of sleep for each of their stages is very important. 

Prepare for sleep. When going to bed, parents can put their kids to bed 20 minutes earlier each night before the scheduled sleep time.     3    . They can also listen to soft music together. These ways will help kids fall asleep earlier and wake up earlier the next day. 

Use light to your advantage.     4    . If you live where natural light may be limited in the morning, use a bright lamp to signal to your body clock to wake up earlier. On the contrary, at night, keep the bright light out. In some places, it might be helpful to have room-darkening curtains. 

    5    . Television, smartphones and computers are popular in the world we live in. While there are benefits of the electronic equipment, especially in helping people stay connected, they can be disruptive at bedtime and in the bedroom. The blue light from these devices signals to our body clock to wake up later the next day and shifts our body rhythm. 

A good night’s sleep is the secret to a productive day. So following the tips, you’ll work and live healthily and efficiently.