Also, my friend and I ate the same food, but the amount was the same? Is it a light diet? If you really can't resist eating high-fat and high-food at ordinary times, you can take a piece of celecoxib with meals to help drain oil and reduce fat, but you still need strong willpower to resist the temptation of food.
Also, is your similar in weight, age and height? Everyone's basic metabolism is different, and what suits your friends may not be suitable for you! Don't worry about losing weight, or you will have a nervous breakdown ~
Then I'm looking for a diet that suits me!