With this type of evil spells, astral entities enter the human body. At the same time, a person feels that something is happening to him, there is some heaviness in legs, while research does not show anything.
If the invasion took place in the abdomen, then the person feels on the physical level that something is turning over in his stomach. The same sensation in the spine. When it implanted in the head, there may be severe headaches.
Likewise, the victim does actions that were not characteristic of him earlier.