you really cant explain a how painfull a good body shot can be until you get hit with one!!
if you hit the right spot its the best way to stop a person... and the pain and effects on your breathing etc lasts longer then any shot to your head...
last good one i got hit with... took me about two seconds and then i felt it.. had to take a knee and breathe real deep lol advice to you!! always keep your elbows tucked in :P
peace