Awhite belt practitioner was recently banned from his jiu-jitsu school after expressing concerns about a potentially dangerous technique being taught to beginners.
The student was concerned when his black belt instructor demonstrated the tani otoshi, or “valley drop” technique, to a class composed primarily of white belts. The technique has gained notoriety in some circles for its potential dangers when performed incorrectly.
“Tani otoshi is notorious for being dangerous,” the student explained. “It was done to me a few times. I just get very worried since [John] Danaher said it’s a very dangerous technique, and many judokas on YouTube said so too.”
Danaher has indeed spoken out against certain applications of tani otoshi. In instructional videos, Danaher identifies it as one of the techniques that can contribute to “catastrophic avoidable injuries” when performed incorrectly. He specifically cautions against executing the technique by sitting to one’s buttocks when positioned in front of an opponent, as this can potentially break an opponent’s knee inward.
According to Danaher, “I’ve seen 95-pound women break 230-pound men’s knees with this.” He does, however, teach modified versions of the technique that he considers safe when executed properly.
The white belt decided to approach his instructor with educational videos explaining the potential dangers of the technique. Rather than engaging in discussion, the instructor reportedly responded by banning the student from the gym entirely.
“So I just showed him the videos of explanation on why the technique is dangerous, and he banned me from the gym,” the student recounted.
Some experienced practitioners suggest that while safety concerns are legitimate, there’s a delicate balance between expressing concerns and challenging an instructor’s teaching methods, especially as a beginner in the art.
The martial arts community remains divided on the issue. Some support the student’s right to question potentially dangerous practices, while others believe that addressing such concerns requires more tact and should be done with deference to the instructor’s experience and knowledge.
For now, the white belt will need to find a new school that aligns with his safety concerns if he wishes to continue his jiu-jitsu journey.
