Injuries to Users Hailing From Laptop
According to the statistics of IDC, a market research company, the sales volume of laptop in this autumn in America will surpass that of desktop for the first time in history. 
That's bad news for backs, necks and shoulders. The doctor NormanJ.Marcus of New York observed that the laptop basically does not fit ergonomics unless you are only two feet tall. So when you are using laptop, some small details influencing your health should be noted.
When you work at a computer, the keyboard should be at elbow height, so your forearms are supported by armrests. The monitor also should be roughly at eye level, thus, you can lean back against the chair. However, most users just place their notebook computers on the desk or on ordinary tables In one hand, as the keyboard is too high, you have to raise your arms, hunch your shoulders, and bend down your wrists. If monitors being too low, your head and neck must be stretched in a forward and lower place that only makes your back tension. It would not be a big problem of dong like this if you just use your laptop occasionally or in a short time. In case you sit for hours, then you are looking for trouble for your muscle. In this way, you will have a painful upper part of your body.
Ergonomic experts have been reminding people of the problems of notebook PC for all these years, but always make a futile effort. People continue to get rid of heavy desktops and turn to slighter and thinner laptops. {P14}> Myofactors LLC founder Thomas Caffrey said people would think that how would a mouse or keyboard being harm to your health. But with the passage of time, bad pose will probably bring people obvious burdens. Not only can the wrong postures cause the pain and stiffness of the neck, shoulder, back and arm, but will also cause headaches, temporomandibular joint pain and carpal tunnel syndrome. Ulnar nerve compression at the wrist of carpal tunnel syndrome patients can cause tingle and numb of hands.