HOW TO UNDERWATER KICK LIKE MICHAEL PHELPS Leave a Comment / 蝶式 / By hkswim The term “fifth stroke” has only been coine … HOW TO UNDERWATER KICK LIKE MICHAEL PHELPS Read More »
TWO STROKES, ONE DRILL Leave a Comment / 蝶式 / By hkswim Who would have thought that you could fix two strokes w … TWO STROKES, ONE DRILL Read More »
