Level 8 Valued Member
I am not sure about that. The reason being - the load on the knees. There is a reason why we do box squats with bad knees. Thanks, I'll pass.
I've done it just fine, but I also do 20 degree squat wedge cyclist barbell front squats, which is also ultra knee intensive.
It's definitely not for beginners or those with unhealthy knees, though, hence the designation "hardcore".