The exact timing creates a strong and smooth butterfly stroke. This is a video that makes it easy to understand the butterfly movement and timing. "People who keep losing movement when they're butterflying," "People who feel like they're floundering," "People who want to butterfly in a cool way," please watch it. Thank you!
Music : Like that, waves
1. Like that – Anno Domini Beats
2. Ikson – waves
https://www.youtube.com/watch?v=gDBNKI_jbE0