The downside of going to bed at an early time, I've found, is the hunger that comes a bit after 2AM. It's one of those things that cannot be helped. It will affect your sleep whether you try to ignore it or not.
There's often a debate about whether or not having a midnight snack will make one pack on the grams. I don't really think it has much bearing on my personal lifestyle because I do eat small meals at four-hour intervals and I think that if the snack is healthy then it's OK. What's the benefit of avoiding a small late snack only to wake up early and murder an unhealthy and overindulgent breakfast?
These are a few of my favourite midnight snacking options and they're quite healthy for the most part:
If I'm up and feeling hungry at 2AM a cup of chamomile tea and a whole wheat rusk always tide me over. The great thing about chamomile is that it's soothing but might require a bathroom break or two down the line. I suggest you pass on this one if you don't like making bathroom missions. The rusks are packed with fibre and slow-releasing goodness.
I keep a small container of nuts and dried fruit next to the water jug I keep on my bedside table. Nuts make for a great late night snack, which is sometimes needed while I'm sitting in bed reading instead on the wee hours of the morning. Mixed nuts like cashews, macadamia, almonds, walnuts etc. They're filled with good fats (omega 3) and vitamin E.
3. Something sweet
When I have my sweet tooth cravings along with a bit of hunger I'll have a low fat and sugar-free yoghurt, fresh fruit or a smoothie.
I sometimes crave cold milk and cereal, just this morning (before the sun came up) I was sitting at my breakfast table with a bowl of muesli and cold milk. Lot's of fibre and calcium!
At the end of the day it's up to you whether you have that snack your body wants or not. My only advice is that you try to make it healthy.