I've noticed that im starting to sleep a lot again. I'm always tired. even if I get up and move, the minute I stop my whole body gets heavy and my eyelids start to shut. I eventually give up on staying awake and go to bed. it's really starting to get bad. I just spent all of today sleeping. I probably got 15 or more hours of sleep. has anyone else experienced this? I can't tell if it's a new issue or if it's a side effect of a drug or a side effect of one of my mental illnesses. also any advice on how to stay awake.