Answer from Sang H. Kim:
I am glad you enjoy training in Taekwondo. It is normal that your front kick goes
higher than the side kick due to the structure of human body. After 40, I usually
recommend, practicing with cautions. Side kick, for instance, should be rather practical:
you do not need to kick higher than the stomach with your side kick. If you want
to improve the height of the kick, here are my suggestions:
1) Do horse riding stance in comfortable position - 1 minute
2) Do horse riding stance in a deep stance (without knee pain) - 2 sets of 30 seconds
3) Squat down and hold your ankles breathing deeply - 2 sets of 30 seconds
4) From #3 posture, put both hands on the floor in front of you, slide your right
foot to the right all the way and stretch your right leg, then bring back the right
leg and repeat to the left with your left leg - 2 sets of 30 seconds each side
5) Have a rest for 30 seconds - walk around while breathing deeply. You may shake
your legs and ankles occasionally to loosen up the muscles and joints.
6) Hold a stable bar, chair or table, and do a slow raising right side kick. Hold
in the air as long as you can. Repeat the left side the same way-minimum 3 sets
of 15 seconds on both sides.
7) Finish by practicing your normal side kick in the air or to a heavy bag.
I recommend doing the above 3 times a week for 12 weeks. It is important to know
your limits and progress from there. Monitor your progress weekly. You may keep
a journal and see what you accomplish in about 3 months.
Along the way, you will find your own variations that work best for you. You may
be able to expand your training program beyond what you can imagine now. I hope
this helps you.
Wishing you all the best!
Sang H. Kim