There is no single food that provides all the nutrients that humans need, except for breast milk.

A cowboy rode into town and stopped at the saloon for a drink. Unfortunately, the locals always had a habit of picking on newcomers. When he finished, he found his horse had been stolen.He comes back into the bar, handily flips his gun into the air, catches it above his head without even looking and fires a shot into the ceiling. "Who stole my horse?" he yelled with surprising forcefulness.No one answered."I`m gonna have another beer and if my horse ain`t back outside by the time I`m finished, I`m gonna do what I dun back in Texas and I don`t want to have to do what I dun back in Texas!"Some of the locals shifted restlessly.He had another beer, walked outside, and his horse was back! He saddled up and started to ride out of town.The bartender wandered out of the bar and asked, "Say partner, what happened in Texas?"The cowboy turned back and said, "I had to walk home!"