Generally speaking, noon refers to midday, when nature’s yang is at its highest. At noon, being at midday, it is the time when yang qi gradually grows and develops into the most vigorous, when the outside world has the highest yang qi. Relative to the day, people are least likely to feel cold. If you have a deficiency of yang qi, you can choose to supplement your yang qi by sunbathing, but you should prevent conditions such as heat stroke. Yang qi refers to an active, hyperactive and positive aura that is helpful to the human body. Generally speaking, the morning is the process of gradual increase of yang qi, and the afternoon is the process of gradual increase of yin qi, so noon is the time when yang qi is the highest. If the body has insufficient yang qi, it is recommended to consult a doctor in time to replenish the yang qi under the doctor’s guidance to avoid delaying the condition.