It pays to be aware of your surroundings. The more treacherous they are, the more you had better be aware of them.
That said, I have witnessed exactly what Fire Forged just mentioned- stand in one place, swivel head exactly the same each time and look ahead w/o seeing anything. Stationary dance moves.
In a scrap, the only way I'm standing still is to fire a precise shot or two- or after I am behind cover.
God bless the Sanitation Department- they provide both fixed (dumpsters) and moving (trash trucks) armor, essentially free of charge.