Whats your body type?
Over the years, there have developed several different types of categorising the human body. In Ayurvedic medicine that evolved from five thousand-year-old Sanskrit teachings, body types and their associated personalities were defined as Vata, Pitta, and Kapha. If we go back to our high school/college days you will probably remember a guy by the name of William H. Sheldon. It was Sheldon who introduced his theory of Somotypes back in the 1940's. His basic theory proposed that there are basically three body types and each body type has a specific personality associated with it. The theories that Sheldon presented has become a central vein running through literature and research with respect to weight loss, exercise, and bodybuilding. The body type system that Sheldon introduced characterised the human body as ectomorphic, mesomorphic, or endomorphic.
Not every human being fits exactly into one of these categories but contains characteristics of each, although one is usually predominant over the others. In order to determine your body type, one needs to look back at your adolescent years to determine which category your body type you possessed before changes due to age and lifestyle transformed you into what you are today.
When you know which type you are (or which mixture) and diet and exercise correctly for that type, you will make much better progress.
While some women may think that Kate Moss is the ideal, from a fitness view point she really isn't. And many women who tend to be endomorphic will save themselves much suffering by not striving to change themselves into Ectomorphs; it's not going to happen. Conversely a true ectomorph who wishes to be a Sumo wrestler would also be in for a big disappointment.
Your goal should be to look as close as possible to (or stay looking like) a mesomorph. With the correct exercise and diet this can be attainable, and while you may be a bit upset that you have to work hard to look good while the true mesomorph looks that way naturally, at least you will still be fit and look good. And even the mesomorph will find as he/she gets older that some exercise and diet is needed if they want to continue to look good and be fit.