Providing energy. Carbs are a quick source of energy and easily broken down. Lipids are stored energy that can be broken down when needed. Both provide energy but in different ways
Thrifty metabolism
Thrifty metabolism is the genetic
tendency toward efficient use of energy that results in below-average energy
requirements and increased storage of calories as fat. Thrifty metabolism
contributes to less weight lost when an obese person reduce the amount of his
calorie intake even though there is changes in metabolism.
