I just now started getting more into boxing, and wanting to do it more than just messing around with friends in the back yard. I noticed today, when i was down working out, and throwing a few jabs, than straights. that when i jabbed with my left, i hurt my elbow, not bad, just a small sting for a while.

I was wondering if it was becuase a bad technique, of street fighting into boxing. or if this is normal?

you could be over-extending your elbow.?