Endomorphic Mesomorph

The endomorphic mesomorph carries dense muscle and bone like any mesomorph, but layered with enough subcutaneous fat that the silhouette reads thick rather than chiseled. This is one of the most common somatotypes in collision sports and strength sports: the rugby forward, the powerlifter, the heavyweight wrestler, the Olympic weightlifter in the heavier classes.

Bone breadths at the humerus and femur are wide, limb girths corrected for fat are large, and skinfolds are well above average without crossing into true endomorph territory. The body is built to absorb and deliver force.

Populations historically classified as endomorphic mesomorph include Eskimo men in Heath-Carter's original surveys and elite sumo wrestlers, where the combination of mass and musculoskeletal robustness is selected for by both environment and sport.

Endomorphic mesomorphs gain muscle readily and store fat readily. The training implication is that body composition responds quickly in both directions — these athletes can drop bodyfat fast when they need to make weight, and put on size fast when they need to scale up for a heavier class.