When you start kickboxing, you should do so under the guidance of a professional instructor. You can hire a private coach or take group classes. But if time and money are a factor, try the FightCamp classes, and train from the comfort of your home. One common mistake beginner kickboxers make is striking with their toes when they throw a round kick--don’t do that! You want to land your kicks with your shin and instep (top of the foot). As you kick, you will start to calcify your bones, meaning that calcium will build up in your body tissue and harden. This is great for bone health and extremely important, especially as we get older. The stronger your bones are, the less likely you will be to twist your ankle or break a bone.