寫的真好Freestyle Kick: The Complete Guide

Freestyle kick workout at home這不錯，要想一下怎麼降階讓手不要撐，不然對小孩太難了

Straight Leg Kick Correction | Stroke Development只講了upkick

Dryland Flutter Kick要自己先做做看

Fix Freestyle Kick and Swim FAST這個也不錯

How to teach kids to swim freestyle in 10 easy steps可以抬頭換氣，跟用蛙鞋增加水感是沒我想過的