I'm not saying people shouldn't resist techniques. It's definitely something important for pressure-testing techniques. However, one thing I see periodically in beginners is they try to resist a technique simply by out-muscling it or being "tougher" than their opponent, and that's how they end up getting hurt. It's most common in teenagers (boys or girls) or young men. You're putting a wristlock on them, and they want to prove they won't be taken down by a pain technique, or you're trying for a sweep and the lean into it. I've seen some wrist injuries and leg injuries because of this. On the one hand, I tell them not to fight it too hard, because they could get injured (and I've seen it happen - especially when the partner is a beginner that doesn't have much control over the technique either). But on the other hand, I know that if I tell someone not to resist the technique, they might start thinking "then this technique only works if people aren't fighting it." While there are counters for the technique (some we teach, some we don't), "resistance" doesn't mean being stubborn until your joint bends too far in the wrong direction. How do you tell students to train in a manner that won't injure themselves, while also not making them feel like the technique is worthless?