Let's find out the butterfly moves that men find difficult

This is a video of the upper class members' butterfly training. There are no basic butterfly classes for beginners and intermediate students, and this swimming pool teaches butterfly classes for advanced classes. In fact, you can think of it as an beginner butterfly class. Usually, male members have difficulty with wave movements because of their flexibility and muscular body, so they have difficulty with stretching movements. Please refrain from slandering or insulting words because it was filmed for the purpose of improving movement. Thank you.
#swimming #butterfly #education