Fat Embolus- Like the blood clot, this collection of fat travels through the body and into the lungs. It is a rare occurrence, but a possibility and it affects the ability to breath. The use of smaller rods prevents this.
However, there are certain foods that are harder to digest. Your body consumes more calories in digesting these foods than the calories they have. This results in a negative balance in your calories and hence the name, negative calorie foods.
eat more and lose weight, facilitating weight loss