Originally Posted by SpitFire
IMO, you should be fully warmed up before you start banging the ball around with your opponent. That will allow for the "warmup" to consist of you feeling out your opponent for weaknesses.
If they're having issues with warming up, then it means they should have ball control issues come match-time.
That would presume that you got your own hitting partner; what are you a pro?
Maybe they have ball control issues during the match, but personally I need the warm just to find my shots (especially since most people just push the ball).
Bottom line, I try to ignore funny behavior and try to warm up normally, starting slowly/easy etc.