Mitochondria, known as the power plants of cells, are responsible for the body's energy balance. They influence physical and mental performance and play a crucial role in overall well-being, health, and weight. Therefore, the more mitochondria present in the cells and the more actively they work, the more positive the effects on the body. Poor nutrition can weaken mitochondria, while a good diet can protect them and stimulate their growth. Recent studies show that particularly well-connected mitochondria can protect against obesity. This book presents specific methods such as detoxification, fasting, and certain foods that can be used to promote the growth of mitochondria.