"THE DALAI LAMA ON THE PRACTICE OF DREAM YOGA The main purpose of dream yoga in the context of tantric practice is to first recognize the dream state as dream state. Then, in the next stage of the practice you focus your attention on the heart center of your dream body and try to withdraw the vital energy into that center. That leads to an experience of the clear light of sleep, which arises when the dream state ceases. The experience of clear light that you have during sleep is not very subtle. As you progress in your practice of dream yoga, the first experience of the clear light occurs as a result of focusing your attention at the heart center of the dream body. Although the clear light state during sleep at the beginning is not very subtle, through practice you’ll be able to make it subtler and also prolong its duration. " —His Holiness the Dalai Lama, Sleeping, Dreaming and Dying https://m.facebook.com/story.php?story_fbid=2274059082699275&id=141872432584628