For the record I'm 40 , and I don't really think of myself as old
Good! Because you're
not! I've got 20 years on you and
I'm not old, so.... :wink1:
...the only thing that isn't improving is my kicking height.
High kicking takes time, lots of time. You can't kick high with a low chamber. And as Shaderon points out, it's easy to pull or strain hip flexors, so you have to develop the high chamber slowly. You also need to work on strength
in the extended position. With very large muscles like pecs and quads, big compound exercises yield very rapid results, but smaller muscles, especially those which it's very difficult to set up resistance for at the relevant angles, take way more time. So far as I can see, the only way to develop that muscle strength is to practice kicking,
slowly, maybe wearing ankle weights—that will do it, but again, those muscles are slow to develop; you can't use big compound exercises to target them.
Maybe I push myself too hard and need to be more patient.
Patience is one of the keys to the whole business. The other key is developing a routine that actually targets the right muscles, while also building balance skills and power. They play off each other in a way that I don't quite understand, but both my height and balance have improved since I started kicking a very heavy bag (>100lbs) using the logo design on the bag as targets for accuracy.
PS , Is the Kurz book worth getting , I've read a few negative reports .
I'd heard good things about it... just out of curiosity, what had you heard neagative about it?