Great Article @jasimg!!
As you said society has changed the perception of beauty in ways that many times are not healthy for individuals, we can observe how magazines show people that might be even damaging his own health in the search of that "perfect" body.
A good shape has to bee the consequence of good habits , as good nutrition and regular excercise, less stress and good sleep. The shape that each body adopt with this habits will be different, being they are ectomorph, mesomorph or endomorph, so this is the conception of a good shape, and it wilk be different for each person.
God Bless Us All!