Throw your punches short and crisp and put your body weight behind the punch by pivoting with your rear foot and twisting your hips and torso with the punch.

try more weight and less sets.

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hit with your body.

all short boxers do this. mike tyson, rocky marcianoe etc.

Do clap push ups and weights (work your triceps, chest and shoulders). If u don't have access to weights, do 1 armed push ups

my answer is develop more speed and learn how to throw with your body into your punch... or better yet you can seek professional help.. youtube or boxing gyms

http://us.yhs4.search.yahoo.com/yhs/sear...

I am pretty short compared to other boxers my age, however I already have great punching power. So I decided to be like Rocky Marciano. I get a lot of my workouts from him, but not as hard. I am 15 btw. I use a 180 lb heavy bag and I punch underwater with 20 lbs weight on each hand. What else can I do to make my punches harder?