It's hard to say. It is recognized that the morning time is better, but the physical function has not been fully recovered in the morning, and the exercise effect is not necessarily good, but it is easy to achieve the effect in the afternoon. Exercise on an empty stomach also has some bad effects on the body. It has been reported that athletes died suddenly after running on an empty stomach in the morning. If this habit is true, it is not advisable to drink half a cup of milk too much to increase the burden on the stomach. Another reason is that air pollution is not so good now, and uncles and aunts who sweep garbage in the morning can run or not. Inhaling dust in the morning will shorten your life. To this end, I suggest going to a special playground or park. In addition, the cold air in the morning is very irritating to the lungs and easy to hemoptysis. Please warm up first.
In fact, it's important to keep exercising regularly. A person's body will adapt to his own habits. The biological clock will automatically adjust when you exercise every day, reaching the best state, and the efficiency will naturally improve.