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.
The best way to lose weight and keep it off is to eat fewer calories and be active. If you cut 250 calories from your diet each day and exercise enough to burn off 250 calories, that adds up to 500 fewer calories in one day.If you do this for 7 days, you can lose 1 pound of fat in a week. Many experts believe you should not try to lose more than 2 pounds per week.Losing more than 2 pounds in a week usually means that you are losing water weight and lean muscle mass instead of losing excess fat. If you do this, you will have less energy, and you will most likely gain the weight back.o lose 1 pound of fat in a week, you have to eat 3,500 fewer calories (that is 500 fewer calories a day), or you have to burn off an extra 3,500 calories. You can burn off calories by exercising or just by being more active. (Talk to your family doctor before you begin any type of exercise program.