If exercise is to lose weight, it should not be less than 45 minutes at a time and not less than twice a week. It would be more scientific if there was a heart rate meter. Choose the right heart rate according to the age and keep the aerobic heart rate. Stick to it and you will naturally lose weight. Eat less oil and salt and eat more broccoli and all kinds of fruits and vegetables. Meat eats fish, chicken, cattle, sheep and other low-fat meat, ranking successively, and eats less high-fat meat such as pork.