I believe fasting, or going without food and/or water, is a lost art in the Western world. I believe you can improve your life by learning and going through the process. Start slowly by eating one meal a day for a time, then try a three day fast after eating regularly for a time. Here's why:
Bodily purification. This is a time of breaking down the weakest links of your character. It is literally survival of the fittest on the cellular level. Your body decides to rid itself of the weakest units in the organic system so that the healthiest aspects have a better environment to flourish, like weeding or trimming.
Learn better empathy. Learn the real-struggles of others in a controlled environment. Our beloved Final Fantasy characters sometimes go without nourishment for extended periods of time on their travels, and you too can experience the same elevated pride that they do. Think of how a large predator such as a lion eats. A keen predator knows it can bring about its own demise through its own destructive energy. The accomplishment of a successful catch is euphoric and necessitates extreme relaxation.
All hyperbole aside, it can be good for your health, like helping with insulin and cholesterol. Makes losing weight easy and fun.