There is indeed a part of the wrist, but it is not as important as the toe of the deltoid. In fact, arm wrestling mainly depends on the strength of pectoralis major, latissimus dorsi and deltoid toes, and biceps is also a part, but the effect is not great. You may not believe what I said, but the fact is that the so-called best way to exercise your wrist is actually to do shoulder level adduction, that is, to practice bench press or flying birds. It is definitely better to practice pull-ups more than to strengthen forearms and triceps. Triceps has nothing to do with wrist wrestling. Its function is just to straighten your arms and lift them behind your body. Biceps is responsible for pressing down.