Interesting thought.
But yeah, dangerous.... could kill someone accidentally.
My father knows of a guy who killed his wife while sleepwalking.
Not too far from what you are considering.

However, it's also a subject perhaps related to belief of the mental model of the world. eg. 'The truth - there is no spoon'. If you truly believe it, perhaps it will be the way you believe.
It's a debatable point I haven't decided on yet
Perhaps exercising this idea may produce paranormal abilities, but at the same time turn you insane. At which point how do you know that you really eg. levitated, or simply hallucinated.
Then again, does it matter to you at that point? ... the logical flow goes on...