Âé¶¹´«Ã½

Physics

Swimming behind someone cuts drag by up to 40 per cent

Swimmers in open water races can reduce the amount of drag forces they experience by swimming behind or at the hip level of another swimmer

By Karmela Padavic-Callaghan

31 July 2023

Swimming in certain positions relative to other swimmers can offer an advantage

Swimming in certain positions relative to other swimmers can offer an advantage

Shutterstock/Jacob Lund

Swimming with other swimmers can be more efficient than swimming alone. Swimmers in open waters, like in marathon swimming events at the Olympic games, can dramatically reduce drag between themselves and the water by assuming just the right position relative to the other swimmers.

Birds can fly further when in formation, the endurance of many fish increases when they swim in schools and some cyclists save energy when they cycle in groups. at École des Ponts ParisTech in France and his colleagues examined…

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