Q: My 2-1/2-year-old is still sleeping in her crib. When we put her in for a nap, she begins jumping up and down, holding onto the side. She was also doing this at nighttime, but that has stopped. We ...

The first time it happened, I didn't even know it. We were in the last throes of an afternoon party at our house, complete with about 16 kids ages 8 and under, when I put my exhausted 2-year-old down ...