Question about the technical stuff in fighting

When I'm throwing combos at top speed, there is little to no power in my shots (ESPECIALLY my body shots). Plus, my bodyshots are always weak, because if I throw them with too much power, I will slow down and leave my head wide open. What I want to know is, how do good combination throwers have power behind every punch in a combo? For me it seems like I have to go with either speed or power, and when throwing body shots you have to throw with speed because your head is wide open and you have to get your hands back up.

Re: the technical stuff... It sounds to me like you are punching too much with your arms. Punching technique is vitally important and would take pages to explain in detail, but let me truy a thumbnail version. ::) While in your basic stance imagine picture an axis creating a center line through your body from each direction. When punching your hips must precede your shoulders through the center lines; your shoulders must precede your fist. This is accomplished by shifting weight from one foot to the other, and pivoting on the newly weightless toe. Try these couple tricks. First I am sure you've seen in movies a boxer pawing his nose with his right thumb. There is a reason behind that; from your basic stance throw a straight right, begin with your thumb alongside your nose. Put your weight onto your left leg (kept straight, knee not locked) pivot your right toe sharply inward- this will turn your hips through center. They in turn will turn your shoulders. Keep contact with your nose (the thumb of your right glove alongside it) until in your peripheral vision you see your right shoulder passing your right eye. For another stand close to the heavy bag, your feet under your shoulders left flat, right heel up a couple inches, arms bent 90degrees, elbows resting on your hips. Drop your right fot flat pivot on left toe to torque your hips and let them drive your fist into the bag. Then drop your left foot flat, pivot on your right toe to drive the right fist Keep doing this, starting slow and building speed. Concentrate on that weight shift and realize it must be done every single time. Finally, find yourself some pint cans and stand on them while some one holds the mitts for you. Punch- throw combination. If you don't punch properly you'll fall off. If done properly you won't; a 12yr old I once trained could do three rounds easy on the cans and he could knock you silly with any punch from any angle because it taught him leverage.