Blood is the life energy in liquid form linking higher energy-spirit– and lower energy-flesh & bone. That means spiritual activities-heart– affect blood to change body, and vice versa. One of blood’s function is keeping a reservoir, say Spirits Pool. That means all ancestors’ spirits present in a living man’s blood. That ancestors’ spirit include not only one’s parents but also one’s first parents Adam & Eve –God. The iron content in blood is the memory medium of the living on which brain read/write information. With the information and the energy in blood produce cells which compose flesh and bones of body.