Is it better to exercise in the morning or in the evening?

Many friends think that exercising in the morning is better than in the evening because the air in the morning is better than that in the evening. In fact, this idea is wrong. It is actually better to exercise in the evening than in the morning, because in the morning, the body's organs are operating at a relatively low level, and it is not appropriate to exercise at this time.

Good exercise at night.

1. From the perspective of the human body itself. Sports medicine has proven that when you just wake up in the morning, the functioning of the human body's organs is still at a low level, because all body functions are reduced to the lowest state when the human body is sleeping, so as to reduce consumption and get sufficient rest. Exercising shortly after waking up is the same as not warming up before strenuous exercise to allow the body to fully mobilize. Exercising at this time is more dangerous for people with weak cardiovascular function. The human body's ability to move is fully developed at night, so when running at this time, the body can more easily adapt to the rhythm of exercise. Moreover, running at night can help people sleep better as long as the intensity of exercise is controlled.

2. From the perspective of the external environment, the carbon dioxide index in the air is highest in the early morning, which is caused by the combined effects of photosynthesis and respiration of plants. Because there is no sunlight at night, plants can hardly carry out photosynthesis while respiration is still going on. Therefore, plants are constantly consuming oxygen and producing carbon dioxide at night. This situation continues until the daybreak when the plants can carry out photosynthesis. Therefore, the oxygen content in the air is low and the carbon dioxide content is high in the morning, which is not suitable for exercise. The opposite is true in the evening, when the oxygen content is the highest and the carbon dioxide content is the lowest. Moreover, the dust suspended in the air the day before has not completely disappeared, so exercising at this time is far less favorable than at night.

Moreover, exercising in the morning is not good for the body's immune function. After morning exercise, the body produces too much adrenal cortex hormone, and the corticosteroid content in the body increases. Not only does this fail to enhance physical fitness, it also often causes high blood pressure due to corticosteroids, and also suppresses the body's normal immune function. There is no such worry when exercising in the evening, because the level of corticosteroids in the evening is significantly lower than in the morning.

The harm of exercising in the morning is not limited to this. After morning exercise, the flow of saliva will slow down significantly. Because saliva flow can help people resist infection, if the saliva flow is slow, it will make people more susceptible to viral infection.

To sum up, we can see that exercising in the morning not only does not provide sufficient exercise, but also has disadvantages such as being prone to injury and reducing immunity. Exercising in the evening can not only avoid these disadvantages, but also greatly improve the effect of exercise and improve sleep quality. Therefore, exercising in the evening is much more scientific than exercising in the morning.