Somatotype is a theory introduced in the 1940's by American psychologist William Herbert Sheldon to justify the human outlook according to the relative contribution of three fundamental elements which he termed "somatotypes".
There are three body types namely Ectomorph, Endomorph and Mesomorph.
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Ectomorphs
Those people are tall and having little body fat, and very less amount of muscle. They cannot gain weight easily they are termed "Hard Gainers". While most of us hate these genetically-blessed people, some male ectomorphs they are not happy with there long and low chested body, and some female ectomorphs wants to have these more womanly curves.
Some major characteristics of Ectomorphs
Endomorphs
On the other side, Endomorphs have lots of body fat, do have muscle, and gain weight easily. "Football lineman tend to be endomorphs -- they're heavier and rounder persons.
Mesomorphs
These people are athletic, solid, and powerfull. They don't gain weight and not come in category of underweight and they can eat everything they wnt without worrying too much about it." They can gain and lose weight without too much effort.
