I've had one of those crazy weeks that I haven't had for a long time – up until 5-6 in the morning and then back at it again a few hours later.
There were times where I almost forgot to eat and then would suddenly find myself starving. A lot of the time I ended up raiding the house for chocolate and other munchy food. I was surprised by the behaviour but put it down to the lack of sleep.
Anecdotal, but I definitely noticed the low sleep = munchy behaviour in myself this week.