Internal clocks...

We go to the park several times a week. We have to get out of the house during the day or else there is total chaos in the house. So, the kids get fresh air and sun, they play, they run with each other and some friends. They dig in the dirt, sand or woodchips. They have tons of fun. They stop every once in a while for a snack or a drink of water and check in with me. And it is always amazing to me that in the midst of all of this fun that they come to me at noon (give or take a few minutes) and ask if it is time to go home. This is when I check the time and... well...it is time to go home for lunch and naps. I guess we have left at noon so many times that they are programmed to leave at that time.