This from livescience.com
A friend who is suddenly sick asks that I drive him home on his motorcycle. I’ve never driven a motorcycle, the trip will take an hour on the highway, I have no helmet, and there’s a second passenger. I ask if we could use surface streets; he says no. I ask what’s the slowest speed we can go; he says 50 mph. I say I won’t do it. Others crowd around, pressuring me to drive that bike. I say I’ll order Uber and pay for everyone.
I am smart enough to know that I should not drive that bike, but not smart enough to know that I am dreaming.
When you sleep, where does your consciousness go?
Full livescience article: Why Sleep? Why Dream?