I am trying to study for my nursing test and normally If I take an energy drink I stay awake. But lately I've been so sleepy I can barely stay awake. And when I do go to sleep I wake up at 1:30. I just feel unfconfident and stressed and so sluggish. It feels like I'm moving slower. I try not to do energy drinks all the time but lately I just can't stay awake. I normally study walking around and normally try not to sit or lay down. So lately each time I get up to walk I feel sleepy. And if I eat I get even more tired. I just don't know what's wrong with me.