Long-distance runners like to train at high altitudes because the lack of oxygen there stimulates the

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Training at high altitudes, where oxygen levels are lower, stimulates the body's bone marrow to produce more erythrocytes (red blood cells). This adaptation helps improve the oxygen-carrying capacity of the blood, which can enhance endurance performance when the athlete returns to lower altitudes.

Long-Distance Runners Like to Train at High Altitudes Because the Lack