The same way a heavy weight olympic judoka could literally kill you by throwing you full force on the mat. I trained months in Thailand, and the instructors (p

The same way a heavy weight olympic judoka could literally kill you by throwing you full force on the mat. I trained months in Thailand, and the instructors (pros or ex-pros) were always sparring ultra light as they didn't want to get injured before their matches, and also because it's a better way to improve. In the West, some (rare) guys tend to have a bigger ego and may actually get some pride to harm beginners in sparring which is a bit ridiculous. A healthy gym will typically discourage such behaviors. Coming back to my initial point, I feel it's easier to spar lightly in boxing than in judo.