Because "combat" is for others and "healh" is for oneself. Sometime even the training are difference. If you train
- combat for health, you will hurt yourself.
- health for combat, it won't work.
For example, when you punch into the thin air, if you pretend that you are punching at your opponent, you may hurt your elbow joint in the long run. If you want to use TCMA for health, you will need to modify your training differently.