In contrast to football players, long-distance runners tend to be ________________, that is, is thin and frail-looking.

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Quizplus · Accepted Answer

Ectomorphs are characterized by a lean and thin physique with minimal body fat and muscle mass. This body type is optimal for long-distance running as it minimizes the amount of weight the athlete has to carry, improving their endurance and performance. Therefore, long-distance runners tend to have an ectomorphic body type, which is thin and frail-looking.

In Contrast to Football Players, Long-Distance Runners Tend to Be