I have read that the processed junk foods in supermarkets and strategically placed at eye level. Also all the healthy stuff is in the outer sides of the store. The crap is located in the middle of the store. The processed carbs...All that stuff. Also processed carbohydrates are extremely inexpensive to produce. You should also look at the marketing for junk food and fast food...Its a huge business. So its definitely easy and cheap to be a fat ass.