Knowing planes, body positions, directions and such can help people locate areas on the body more easily and precisely. One occupation could be a forensic pathologist who need to identify main points of interest on a body
<span>Communicable disease refers to any infectious
illness that is transferable from one person to another by direct or indirect
contact in terms of bodily discharge or aided by a vector (a parasite which
transmits disease). The term is synonymously used with contagious disease. </span>
That’s understandable
In reality as of as you’re getting at least 8 hours of sleep a day you’ll be functioning correctly when you wake up