Vertical Butterfly Drill Leave a Comment / 蝶式 / By hkswim Olympian Scott Welts Demonstrates a butterfly drill to … Vertical Butterfly Drill Read More »
3 Press and a Stroke Butterfly Drill Leave a Comment / 蝶式 / By hkswim The chest press is a very important part of the butterf … 3 Press and a Stroke Butterfly Drill Read More »
