A documentary about people who drill dime-sized holes in their foreheads in an effort to improve health and mental capacity.
Many would call this stupid but monks of many orders have been doing similar for thousands of years. Typically the hole would be pinned sized and there are many precautions so that this is done correctly. Those who have done this all claim seeing/feeling/experiencing things that are not so easily experienced in the environment unless sophisticated machinery was used. ~ Tony