Dreaming of sleeping

I've started dreaming that I'm asleep. What does that mean?

In the dreams I am warm and comfy but I know I have to get up to go to work or school or somewhere. Sometimes I wake up to find that I am sleeping somewhere inappropriate, like the middle of an office. It isn't like those humiliating dreams where I'm naked. This is just bothersome. I should be doing something and I'd rather be sleeping.

I'm having some insomnia lately. So I guess the concern about getting enough sleep is bleeding into my dreams. Or maybe my brain is trying to sleep twice as hard.

I just find it really odd that I am dreaming of sleeping. How boring is that?