Yeah man SP can be pretty intense lol.. When it happens to me I have a hard time swallowing and my heart also races.. Since I learned to use SP as an oppurtunity to LD I can calm down by telling myself Ill be in a LD soon.. I close my eyes .. lay there as still and calm as possible and keep telling myself Im about to be dreaming (to avoid a false awakening or non lucid dream) then it feels like I like sink through my bed and fall into my dream.. Really cool feeling