I don't like the use of the axe kick in sportive Taekwondo sparring.Videos referenced from Taekwondo AnimalsThe problem with the axe kick is that it has to be brought all the way up, and then dropped a little way in order to hit the opponent somewhere in the head/neck or shoulder region. Wouldn't it be easier kicking the opponent somewhere lower down on the body? It would certainly expend less energy. And look at how much of your body is exposed. This seems to be an overly a risky technique with a poor return on invested effort.I once had a visiting black belt who used this particular axe kick frequently in sparring. None of our students could understand why - since it wasn't really hitting them. When I pulled her aside she said the kick was to knock someone out. So I told her to perform the kick, and I lunged in and took the downward falling axe kick right on my forehead - full force. Then looked her in the eye and said there's a problem with this kick. The problem is that there are only certain situations where it'll work really well - and most times an opponent who is positioned to strike you will not be in those 'certain situations.'