sleep-deprived

So now I'm starting to realize why junior year is supposedly the hardest out of all four years. I just spent almost 2 hours trying to figure out the chem homework. Half of which, I barely even understand. I don't even feel like studying anymore -___- My brain feels like it just ran a marathon. And died. I hate conversions. GAHHHHHD, all I want is a decent amount of sleep.