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Advantages and disadvantages of morning running and fun running
Running in the morning can breathe fresh air with less dust, which can stimulate people's spirit and keep a good state of the day. And you can also get into the habit of getting up early and having breakfast. But running in the morning can easily lead to hypoglycemia, and even severe syncope. You can take a few sweets with you when running to prevent hypoglycemia.
The air at night has relatively high oxygen content and flexible time, but it also has dust. People with asthma, rhinitis and other respiratory diseases had better avoid running.
reference data
The role of morning running