Hello, how to say it. First of all, to answer you, the best time to lose weight in a day is between 6-9 am. It is recommended to exercise on an empty stomach. The reason why I choose to exercise on an empty stomach in the morning is that after a night's rest, the calories stored by the human body have been consumed almost. If you exercise on an empty stomach in the morning, you can effectively consume stored energy and not consume calories.

I hope it helps you.

I hope to adopt by hand.