sleep standing?

Ever heard of it? I hadn't until I checked on M last weekend after church. She had been putting up a major fuss about not taking her nap (even though she was exhausted.)

I was busy downstairs when I noticed that it had gotten unusually quiet upstairs. "Could it be that M actually fell asleep," I wondered? Yes, and never before in such an unusual position.

Later, when I asked how she had managed to fall asleep standing up she said, "Well, I was playing, and my head just kept getting heavier and heavier until I just couldn't stay awake."