9- 10 am: During this period, the human body has the fastest metabolism, and exercise can burn fat well. 2. 3: 30 pm: You can eat snacks to prepare for exercise before dinner. But don't choose refined sugar food. 3. Do some exercise before meals: Walking is the best exercise before meals. 4, exercise before going to bed can accelerate weight loss: exercise for 30 minutes two hours after dinner.