http://www.fastcompany.com/3012796/work-smart/laptop-posture
If you're reading this on your laptop right now, take a second to bring your awareness to your posture.

How are you sitting? How is your back? How about your neck?

Whether you realize it or not, having a bad posture directly impacts your productivity. Sitting straight and looking ahead energizes you, while being slouched over will make you feel more tired and lethargic.

Now imagine spending 8-10 hours a day for the next 10 years working on your laptop with bad posture. This is a fast track to back problems, neck pain and an expensive medical bill.