There's a few things I wanted to ask. I apologize if this thread has been made before. First of all I'm willing to give my 100% to learning and possibly getting good at tae kwon do. Can someone tell me how long it takes the average person to do kicks like the 540 hook kick? I'm having trouble even doing a spin kick. Also I want to know what stretches are the most beneficial? And if possible is there any workout I can do which is specifically geared towards martial artists? Thanks a lot.