I took anatomy classes. I went to medical libraries and talked to doctors and nutritionists. I did the whole thing before using myself as a human guinea pig.
Foods high in bad fats, sugar and chemicals are directly linked to many negative emotions, whereas whole, natural foods rich in nutrients - foods such as fruits, vegetables, grains and legumes - contribute to greater energy and positive emotions.
Most of us start out with a positive attitude and a plan to do our best.
It is now common knowledge that the average American gains 7 pounds between Thanksgiving and New Year's Day.