My name is Scott, and in this Instructable I will be demonstrating how to throw an effective punch. A little background: I have been studying Martial Arts for around eight years, teaching for three. I am a second degree black belt in Isshinryu karate, and brought home five medals- three gold, one silver, and one bronze - at the 2004 World Games in Athens, Greece. I was also recently inducted into the United States Martial Arts Hall of Fame as Bunki Instructor of the Year (bunki means the application of a movement). I realize that this is "tooting my own horn," but I want you to know that I really do know how to throw a punch.
Disclaimer: This instructable is not a substitute for one-on-one training with a professional. The author assumes no responsibility for the use or misuse of the information in this instructable.
Step 1: The Fist and Arm
The fist should be almost vertical, with a slight turn to the inside. The punch described here fits very nicely into the space right below where the ribs divide. When punching high, angle the wrist down so you are still making contact with the first two knuckles.
A rule of thumb is "Out like an arrow, back like you touched fire." Basically, that means don't leave your punch out there - bring it back quickly so that:
1. You can throw another punch
2. You can block an opponent's punch
3. Your hand can't be grabbed (from which many bad things happen)
THIS IS NOT ALL THERE IS TO A PUNCH!
Read this study, then go on to the next steps!
"The soviets looked at 120 boxers ranging from amateurs to experienced professionals. This study found that among the highest level boxers, the highest percent of their power (38.46%) came from the push-off of their back leg, whereas the arm extension and trunk rotation accounted for 24.12% and 37.42% respectively. "
I found this summary of the study on http://www.combatathletics.com/articles/Article_%20Punch_Power_Development.html and several other web sites, but was unable to find the original study.