A proper backthrust

The backthrust is a powerful kick as it kind of uses its body weight to come in. One way to kick properly is to not turn back too much. Another thing I have also realized is that the kicking leg has to keep close to the supporting leg before kicking out. I knew about it but sometimes feel not too comfortable kicking this manner until later I realized the body structure plays a part as the leg has to form sort of a L shape before extending it. Often some might made backthrust into a side kick as they turn too much.