For me as well. Sometimes I go through periods where I stay up too late, and I almost always end up feeling depressed after a few days of it.
If you usually sleep 7 hours a night, and you're only getting 4, then you will feel tired grumpy and sad. But if you stay up all night, you may start to feel euphoric and energetic. Of course, you'll need a good long sleep the next day or so.