1 It is unhealthy to run or do strenuous exercise as soon as you get up.
If you get up in the middle of the night, there is no problem running in the early morning. But if you do exercise soon after getting up, it is unhealthy for your brain to do some strenuous exercise because your brain nerves are not fully active. Many people think that after running, people will be full of energy. In fact, this is also because during running, the brain nerves are gradually active. It makes no difference whether you run or not. It's just a psychological effect to think that you are more energetic after running in the morning than not running at all.
The air in the morning is not fresh.
Many people think that the air is freshest in the morning, but it is not. As soon as the sun comes out in the morning, many plants start photosynthesis while evaporating water, and the oxygen released in the process of photosynthesis reacts with impurities that stay in the air all night (there is more water in the air at night than during the day, so some impurities such as dust will stay in the air and cannot dissipate), so the oxygen inhaled when the sun comes out in the morning is different from what we usually inhale. The air in the morning is particularly different because we are used to the usual air. The air in the morning is different from it, so we think it is "fresh".
It takes a long time to start working and living after the sun comes out.
So it will take a long time to start working and living after the sun comes out, because the impurities trapped in the air overnight will disappear with the fog, and then the air is really fresh. Generally speaking, morning running is unhealthy, not only morning running, but also going to the park for a walk and exercise in the early morning is unhealthy. I suggest you go later. First of all, after a day of activities, your body has been fully warmed up. At this time, it will be better to do physical exercise. Second: Taking a bath after running helps you sleep.