SLIM CHICKS WHO EAT A LOT

This is a phenomenon that simply surprises many girls who are trying to diet. There is always that one friend who eats more than you but will forever have a flat tummy. She will never go to the gym or work out and she is a couch potato in your eyes. If you decided to live her lifestyle for just one week, you will start noticing your waistline becoming bigger.

The easiest excuse is to say....

 "She is lucky that she has good METABOLISM!!" She eat like that and where does all that food go? We will never know"

Before we attribute it all to metabolism we need to know what it is. Metabolism is the sum of all the chemical reactions within a living organism (includes both the energy generating [catabolism] and biosynthetic [anabolic] reactions)

When we eat food, its broken down in the gastrointestinal tract through a process called digestion, absorbed and then used to generate energy in our cells. Our cells use chemical energy (getting a little bit into Physics)

In conclusion, an individuals metabolism may be a contributing factor to how shapely they look but its not the only determinant. Genetic disposition, age, sex, nutritional balance, hormones and a host of other factors play a role. So don't lose hope and keep running on that treadmill.