Spontaeous Combustion of Sleep?

So, we were outside today in, you guessed it, the middle of nowhere, when I looked around and saw a child laying on the ground kind of curled up.  As I got closer I could hear snoring!  I asked her friends to please be quiet that their friend was asleep. A few minutes later I looked around and two more kids were snoring in the mulch.  It was an epidemic!!  Your children would be running and giggling and then they would be snoring (and giggling).  Some of them may need a good shampooing tonight.  We started an apple project today with water and lemon juizzz.z.z.z.z.z.z.