What do you do when even moving takes too much effort?

Well you could actually just do the work and stop doing nothing. My ex used to suffer from depression and never wanted to do anything, but you need to realize that school is important and you need to get it done. Just go do your work, take a 5-10 minute break when you need it, and just finish your work. Your taking the time to write about how you have work, take this time to just go do it and stop lying around. Do you really think your depression is going to get better with your grades bombing? Ultimately you are the one in control of your life, stop doing nothing and go do something worthwhile that will help you.