I have had an issue with the same thing. I have not only binge ate but I have cleaned in my sleep, folded laundry, smoked, and even drove. I would be so exhausted from not sleeping while I was sleeping that I would just collapse. The trigger for all of that was due to the fact that I was stressed out because of my living situation. I tried many medications and nothing would make me rest. The only thing that helped me out is moving away from that situation. I have done it a few times in the last eight months when I get very stressed but other than that I now sleep very well.