Axiom: "Believe it or not, most students struggle with executing proper sidekicks."
Headhunter: "What a load of rubbish side kicks are some of the easiest kicks you can throw also what does flexibility have to do with anything you can throw side kicks as low as the knee."
Gwai Lo Dan: "Well, a respected grandmaster mentions that some people feel you can judge a person's TKD by his/her sidekick (beginning of attached video). And I can do amazing basketball dunks on a 5 foot high net. But that does not make me amazing at dunking."
Personally, I think side-kicks are challenging. As shown in that video:
- We're taught that the base foot should pivot 180 or nearly so, so that it's facing away from the target.
- As shown in the video, we're taught that the kicking knee should be chambered to the chest with the shin parallel to the ground.
- And of course the kicking foot is pulled back into a foot-blade, which serves as the striking surface.
- Then at full extension, there's only a slight hip turn-over -- WITH THE HIPS IN -- so that you can feel the entire muscle chain along the side, the glutes, and the legs all engaging.
- (As Axiom and that video point-out, a lot of beginners perform the kick with the hip pulled back, so that the kick isn't kicking fully to the side -- so you don't get that nice long muscle chain engaging.)
- At our school, for testing purposes, all kicks need to be above the belt at least, and that includes the side kick of course.
- We keep both fists chambered in front of the torso.
- And then of course after the kick, the kicking knee needs to retract most of the way back to the chest before finally stepping down.
- All of that happens on one leg of course, without losing balance.
Personally there's no one item on that list that I find difficult -- but simultaneously doing EVERYTHING on that list is, in my opinion.
I would agree with Headhunter though that if you're only kicking as high as the knee, a side kick is much easier.