The sub-health of teenagers is mostly caused by less activities and eating fast food.

Yang deficiency mentioned above in TCM is one of the manifestations of sub-health. Health theory, kinetic energy generates yang, that is to say, if you want to exercise, you can adjust your body and promote healthy metabolism.

Secondly, we need to diversify our diet. Don't be picky about food. Nutrient absorption needs to be comprehensive. If you do this, you can return to normal health.