The Mayo clinic diet plan was designed by a team of dedicated people from the Mayo clinic, focusing on people with weight issues. In the Mayo clinic diet plan a person should eat a healthy breakfast each day which can include a low-sugar cereal or egg whites. You should also eat vegetables and fruits at least four times a day. Avoid alcohol and eat meat with low levels of fat, and whole grains should be included in this diet plan as well. For a healthy body metabolism ensure that you do at least thirty minutes of gradual body exercises.