The pineal gland is a part of the endocrine gland. The third eye as referred by secret societies. One of pineal gland's importance is that it produces melatonin. Melatonin is a body hormone which is secreted by the pineal gland which aids in the rhythmic function of our body to follow sleep. Melatonin serves as an aid from sleep deprivation and for the relaxation of our body. Another one is the serotonin which is responsible to gives us deep and relaxed sleep at night.
In different society of different cultures, there are persons that believe or disbelieve shadow people. Some say that they are just weak hallucinations when you are trying to scare yourself. But for the others, especially for those who can really see in their visions, shadow people is a supernatural phenomenon that feeds energies from you when you are feeling helpless and frightened.
Angels and entities are known to be the guide or the messengers of God and creatures or life forms, respectively. Angels are commonly depicted to be existing in human forms wearing robes and having wings. Angels and entities may be your source of guidance for a deep understanding of your surroundings. You are powerful in your own way and if you experience some kind of happenings, so be it! Make your moments in life rich and extraordinary.