1) To cover your weak spot while performing the technique. 2) To bring your leg back right after striking, defending your weak spot. Front kicks happen often in non-consensual fighting, so, be careful. Very much appreciated, thanks to all who made this.
Kagawa Sensei is showing the real or original way of kicking---not so high! because by kicking high you will open a wide gap at the groin which can be attack that is why he is emphasizing quick recovery of kick to defend the gap. Kick at hip level of your opponent-- on the bladder, floating ribs, and kidney areas.
