What are the three main body types?

Ectomorph

* Thin and lanky

* Small bones

* High muscle mass

* Fast metabolism

* Difficulty gaining weight

* Tend to be tall

Mesomorph

* Muscular and athletic

* Broad shoulders

* Narrow waist

* Large bones

* Fast muscle growth

* Easy weight gain

* Tend to be of medium height

Endomorph

* Round and soft

* Large bones

* Slow metabolism

* High fat mass

* Easy weight gain

* Difficulty losing weight

* Tend to be shorter in height