The diet practices originate from ancient Sparta where fast food was the type of food that helped people run fast to win Olympic games. The Spartan Diet is not a temporary weight loss solution, but a lifelong plan to preserve a healthy relationship with food.or meat, Spartans typically preferred wild game and hunted. They ate meat in measured quantities and had a diet rich in the vegetables they grew on their farms. Some of the foods included are: 1  Olive oil. 2  Garlic. 3  Pomegranates.