Have you ever tried to do OBEs?

I used to try to feel myself float upwards until I lost all sensation of contact with the surface I was lying on.

Another method was to sort of "peel" your astral body slowly out of your physical self.

I never managed to do it and tbh these days I'm highly skeptical of the reality of actually leaving the physical body but it did produce some amazing sensations and I believe it's a key technique for lucid dreaming.