4 pm to 6 pm is the best time for people's physical strength, so I have leisure time to suggest practicing at this time;
Night is the worst time for people's physical strength, and the weak suggest practicing at other times.
Running on an empty stomach for 40 minutes to 1 hour in the morning is the best way to reduce fat, but it is not good for your health for a long time. Especially people with febrile gastrointestinal diseases.