How to Swim the Butterfly Stroke

Use the correct arm movement. The arm movement in butterfly stroke can be broken down into three parts: the pull, the push and the recovery.

・Starting with your arms extended above your head (shoulder width apart), pull your hands towards your body in a semicircular motion, palms facing outwards. Remember to keep your elbows higher than your hands. This is the pull.

can be broken down into ...　～に分けることができる

extended  adj)まっすぐ伸びた･ぴんと張った

width   /wɪtθ/　ウｨｯﾂ　n)広さ･巾

shoulder-width apart   肩幅にひらく

semicircular adj)半円の･半円形の

palm　n)手のひら

outward adj)外に向かう

palm facing outward, palm out  手のひらを外側に向けて