How can a weak person make his punch devastating in short period of practice?

Question

How can a weak person make his punch devastating in short period of practice?

Answer 1

There's more technique than physical exertion in a good punch.  I'm maybe half as strong as I was in my 20's, but I can still wallop the heavybag almost as well as I did 15 years ago.

Answer 2

Read the link below. The short version: keep your feet on the ground, look at your target, breathe out, rotate your whole body and don't punch from too far away.

Answer 3

can't. good punches don't happen in a short period of time with the few expections of those who are natural punchers. The rest of us need to train hard and a lot