Dreams come from the subconscious, and the mental state of the subconscious can reflect the physiological state, especially when the subconscious has a wild imagination, this effect is more obvious. So judge that your physiological state is active.
Active period, corresponding to inactive period, is two states in which the whole system of human body appears alternately. For example, many people will have this experience: they suddenly wake up one day and find themselves in excellent spirits, and this state lasts for 3 to 15 days. This time is called active period, and the rest time is called inactive period.
In the active period, people's senses and emotions are in an active and sensitive state, and people's nature is to yearn for positive things. Under the influence of subjective consciousness, people tend to have happy and positive emotions, which will be strengthened during the active period, directly affecting your behavior and giving others a feeling that you are very sunny.
But where there is light, there is shadow, and in some cases, there will be a third state: depression. The downturn is transformed from the active period. If the active period comes, you are only troubled by negative emotions, and this feeling will be strengthened and affect your behavior.
Therefore, people should keep a good attitude. Although a good mentality will slowly wear away, people will be in a better physical and psychological state as a whole through repeated reinforcement in the active period.