You can't die from dieing in a dream. I have died in dreams before and here I am to type this message. Also, lucid dreaming is not dangerous. In fact, once you get the hang of it, it's quite fun. I still can't fly in mine but I can float for a very long time over long distances, which is awesome. Are far as sitting up, walking around, and acting out your dream... that isn't from lucid dreaming. That is a whole different deal. However, if you are prone to sleep walking anyway, I'd say lucid dreaming could make it more frequent but, I don't know. Lastly, sometimes you can become not only aware that you are dreaming but you become aware of your sleep paralysis (where your body shuts down to keep you from sleep walking). It is at this point that most people encounter the "dark figure". Normally most people see a dark shadow of a person or something in the room with them. No matter how hard they try they can't move or speak (awareness of the sleep paralysis). At this point panic usually sets in. This can be a little scary but after a while, you start to get use to it. I kinda look forward to it now. The panic part still sucks but I enjoy the feeling of relief once I do wake up. A good way to start getting out of this state is starting small. instead of scream just try moaning and instead of jumping out of bed and running start by just trying to wiggle your fingers. Anyway, take advantage of this wonderful experience known as lucid dreaming and enjoy it. Have fun with it and get creative.
