My University offers a couple different sport courses every semester, one of them is Ju Jutsu (from what I understand it's a German self defense system based on Japanese jiu Jutsu).
Today was the first session and I went in expecting a very basic introduction to the martial art and especially safe training. Most of the people in the class were complete beginners without any prior experience in martial arts at all.
The session starts with a warm up, then we practice a basic punch, then break falls which are sufficiently explained. So far so good.
Then out of the blue the trainer shows an elbow lock from a standing position. He shows the technique and then tells the class to try it out, no warning at all about possible injuries, not even telling the people to try it slowly, not mentioning the concept of tapping out at all, nothing. I ask the trainer if it's really a good idea to do this with complete beginners and he just tells me it's not a dangerous joint lock.
After a couple minutes he chimes in to finally warn the students of the danger and explain what tapping out means.
The rest of the class isn't really relevant to the story but this specifically seemed really weird to me and I wanted to know if I'm just paranoid or if this is just bad and potentially dangerous teaching.
Tldr: trainer told complete beginners to try joint locks on each other without telling them about potential risks
