Single-Leg Kick has been a favorite drill of some of the world's greatest breaststrokers.

单腿蛙泳练习历来是世界级优秀蛙泳选手的最爱。

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As she keeps very good of leg skill going on while she does the single arm drill.

即便是单臂训练，她的腿部仍保持着较好的状态。

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Mark location of the holes for the opposite leg and drill three more holes.

标注出对面支柱的孔洞位置，并打钻出三个孔。

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Super lifehacker Tim Ferriss is a bit of a masochist, the kind of guy who will ask doctors to drill a chunk of muscle out of his leg to analyze the fibers.

FORBES: The 4-Minute Tim Ferriss: Learning to Meta-Learn at SXSW

In one drill, Curry has to perform a series of between-the-leg and behind-the-back dribbles while catching and throwing a tennis ball with his right hand.

WSJ: Two Things Stephen Curry Does Better Than You