関連ワード:
do you have to be in deep sleep to dream do you have to be in rem sleep to dream do you need to be in deep sleep to dream do you need to be in rem sleep to dream do you have to be in rem sleep to lucid dream do you have to be in rem sleep in order to dream how long do you have to be in rem sleep to dream do you have to sleep deeply to dream do u have to be in deep sleep to dream do you have to hit rem sleep to dream
