Using computer for homework

After I entered university, I have to use computer a lot to do my homework. Several weeks ago, there were tons of homework so I sat in front of the computer and tapped the keys for more than five hours. I did not stand up at all while I did it. My eyes were so tired for watching the screen and also had stiff shoulders. I see networks and database makes it easy to manage and simplify the huge amount of information, but long hour deskwork and computer’s blue light are not good for our health.