Never stay up late, you can only gain weight! Ensuring adequate sleep is good for losing weight! My own personal experience won't lie to you. I suggest you don't cut down on three meals, just eat less than usual, just don't add meals, and change your drinks to boiled water. Don't eat anything after eight o'clock in the evening and drink less water, otherwise you will be a little bloated the next morning. Then, keep exercising. It takes 40 minutes to lose fat. It is recommended to take more exercise, just aerobic exercise, otherwise it will be monotonous and difficult to maintain. In addition, it is easier to keep exercising with friends. You can't eat if you are hungry for an hour after exercise! Otherwise, all previous efforts will be in vain, and only a little water can be added, and a small amount of slow drinking is better. This will take effect in a week.