In conjunction to weight training and other physical exercise, humans are sometimes classified according to three body types: # People with an ectomorphic body type are naturally thin and lightly build with flat chest and poorly muscled limbs. They can usually eat as much as they want without gaining fat. Extreme ectomorphs are commonly described as "skinny" individuals.# People with a mesomorphic or athletic body type are husky, with a hard and muscular body. ...

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