Mark Collins said:That's bad and stupid. Nearly as bad as what a local Crossfit did to one of my wife's friends. She couldn't do pull ups so the instructor put her in a band. As she still couldn't do them he pulled her down so the elastic shot her up! She could barely move her arms all week. This is why I travel 15 minutes away once a week to do Crossfit with real coaches who focus on technique.
Wait... you focus on technique... are you SURE you can call that Crossfit?