This might be the weirdest, but it makes a twisted amount of sense. Most grocery stores are set up to direct you to move through it clockwise. This forces you to walk by a whole bunch of potential impulse buys on your way to staples like the butcher, the milk, and your baking stuff.
Sean Wilson never worked in grocery stores, but helped build in the shelves and other displays as a carpenter with a company that did only that. According to Sean, that’s just part of their orders -- and why most grocery stores conform to one or two basic patterns.
Be a rebel. Go in the “exit only” door, scoot past the glares of the checkout people, and make a beeline for what you need. Some studies suggest this will cut your bill down by 40% by not succumbing to impulse buys.