I've never expierienced this while trying to LD. I was laying down with the guy telling me i am dreaming and wave sounds, and other soothing sounds then all of a sudden my body starts getting all numb, then i cannot swallow/breathe but i was still fully aware i am trying to go to sleep and wasn't in a sleep stage yet, then i can breathe/swallow again and say to myself "this time i'll just go with it". Felt strange yet good at the same time if you know what i mean.