For the most part, it will be uncomfortable trying to fall asleep as your stomach is empty, you're feeling hungry, and your mind is trying to suppress the hunger. Then again, you don't want to go to bed with a full stomach, because then your stomach will be put into constant work trying to digest all of what you've stuffed it with, and you may also feel uneasy with a full tummy. One other thing is drinking (or not drinking) a bit of water before sleeping. Some people say it's healthier, some say it's not. Personally, I think it depends on the person, in the sense that if you don't have a drink before getting in bed, you may consequently get thirsty if you don't fall asleep quick enough, then again if you do have a drink, you might be forced to get up and relieve your bladder at some point in time before you wake up in the morning (or maybe even before you fall asleep!). So for this last bit, use your own judgement from your own experience!
To all of you who have already mastered all this and more, I envy you! :) Otherwise, I do hope you found this either remindful/helpful and I forever wish you all less sleepless nights!