<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
Why do adults say they “slept like a baby” when babies wake up every few hours?
<|assistant|>
The expression is probably metaphorical. Adults often feel refreshed after a good night's sleep, like a baby does when it first wakes up. It might also indicate a certain lack of sophistication or inability to recall details from a dream.