Nah I doubt it, when I first started out all of my knuckles were hurting and super red because of wrong technique on the heavy bag. As long as you get your technique correct after a while they just toughen up. check some of these videos at the top of the forum for the technique, just the basics, like punching with a horizontal fist,being loose and not all tensed up, etc. etc. I guess you could still check it out just to be on the safe side, better safe than sorry.