Yes, but this is the exact moment when you start lucid dreaming. If you practice, you can actually control your excitement and, consequently, your dreams as well. After a few times, you will already start the dreams controlling them. Nothing more awesome than just taking off in flight, or going to other planets, or finding any person you want and doing whatever you want with them.
There are a few things that can be done to help you lucid dream. If you want to know, we can talk in more detail. I suppose PM would be best, to not fill this topic with off-topic discussions.