I'm not sure proper is the term to use. Effective is more important. And it is going to vary from individual to individual as well as being dependent upon the opponent. Practice with others is the only effective way of improving the skills.
common
Yes, "Karate" should be capitalized as it is a proper noun referring to the Japanese martial art.
Clenching in surprise, usually with the anus
In my experience, I found Tae Kwon Do to be a more advanced and proper martial art than Karate.
In normal situations karate is a noun and would be lower case. However, when coupled with a specific style it becomes a proper noun. I study karate. He has a black belt in karate. I study Shido Kan Karate. He has black belt in Shitokan Karate.
The best way to improve your karate skills is to practice consistently, focus on proper technique, and seek guidance from experienced instructors.
clenching fists
The word clenching means to tightly grip your hand or hands, to close or squeeze together or to clinch a bolt. Mostly it is referred to when using your hands.
Karate relates to science in the sense that with certain velocity's, speeds and time, the most deadliest of punches and kicks are created. It also deals with using proper mechanics such as using leverage, momentum, and distance.
Jaw clenching can contribute to high blood pressure by increasing muscle tension and stress in the body, which can lead to elevated blood pressure levels.
No, you cannot put someone to sleep with a karate move. You can knock them out or render them unconscious with a blow, but they are not sleeping. It is too dangerous to attempt without proper supervision. Find a karate instructor who can teach you in a controlled and safe environment.
yes very big consinquence