In another surgery, the stomach is attached to the middle of the small intestine. This bypasses a large part of the small intestine and reducing the amount of calories and nutrients absorbed into the body. Roux-en-Y gastric bypass (RYGB) involves stapling the stomach to create a small pouch. The smaller stomach is attached directly to the middle of the small intestine. This allows food to bypass much of the stomach and the first section of the small intestine. It limits the amount of food that you can eat and reduces the amount of calories and nutrients that are absorbed into the body. Previous.
I've seen male competitors eat fewer than 1,800 calories trying to reduce their body fat. This is not the way to get shredded. If you cut your calories this much, you will end up losing significant lean muscle mass and severely damaging your metabolism.
Calorie Deficit. One way to burn fat is through diet modification. Your body uses calories for fuel, and when it runs out of calories from food it starts to burn stored fat as energy. In order for your body to do this, you need to create a calorie deficit by reducing the number of calories you eat each day. You have to burn 3,500 calories to lose one pound; reducing your caloric intake by 500 calories a day will allow you to lose one pound a week, which is a safe weight-loss goal.