Word: airfoils
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Dates: during 1980-1989
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...positions athletes take while competing often look mystifyingly ungainly, but there are usually practical reasons. Aerodynamic considerations have led ski jumpers to hold their arms at their sides to form an airfoil, getting as much updraft as possible after takeoff from the slope. Downhill racers crouch with their chests to their knees, assuming a near fetal position to cut wind resistance. In luge, sliders lying on their backs and steering with their feet minimize resistance by keeping their limbs aligned and body flat...