When we sit at the computer for the whole day the neck gets stiff and the disks press into the vertebraes compressing themselves. And what do we when we feel that the neck is stiff? We start lifting the head up, tilting it from side-to-side injuring it even more.
Watch what you have to do instead:
[youtube https://www.youtube.com/watch?v=p-QHKFdZiLs&w=420&h=315]