This would depend on how safe the children are, how well behaved they are, how much they would find trouble, and how soundly you sleep. I think this decision should be made on an individual basis. I have a 7 y.o who won't watch television. If I left him alone while I was asleep that would be asking for trouble because he always finds things to get into. All children are different. I remember my two girls would always entertain themselves, stay in bed and watch television in the mornings so I could continue to rest. That is just not the case with my son. You know your children and if you think they are safe then there is nothing wrong with getting a little extra rest. Poptarts are not a very nutritious breakfast though. It would be better for you to get up for a minute, check on them, give them some cereal or something and then go lay back down.