Stress eating!!!!!!!!! I absolutely love food now- especially since i work nights- I find trying to stay awake and focused that food and caffeine go a long way. But, nurses have to learn to balance themselves with exercise (which i have recently found) it really does help -I am much less tired and I have yet to gain those infamous pounds your talking about. I totatlly recommend adding some kind of exercise to your weekly schedule. Its great for your mind and your body!!!