The body gets energy from breathing and digestion and absorption of the stomach.

Breathing is weak and shallow, and digestion and absorption in the stomach are poor, so the body can't get enough energy, and qi and blood can't nourish the whole body, so it will be thin and weak.

Take a deep breath, digest and absorb it well in the stomach, then the body will get more energy, and the qi and blood will be sufficient, and the sufficient qi and blood will nourish the viscera, bones and muscles of the whole body and become strong and powerful.

How to enhance energy? You can search Baidu for this article, "The way to gain weight. After 40 years of martial arts, my father taught you 2 tricks to increase your appetite and gain weight! " The article tells the story of a recovery method of traditional sports, hoping to help you and adopt it.