Recently I have been watching a Tamil flick, Master, acted by Vijay and Vijay Sethupathi. It's a good action film and one of the highest gross Tamil film in the year 2021. I want to give a few details which I observed in this movie. The character of Vijay Sethupathi, Bhavani, was in the juvenile detention facility and been tortured by the warden (as instructed by the killers of Bhavani's parents). After getting numerous beatings from the detention facility warden, he started punching the wall as practice. He always uses his right-hand fist to punch the wall.
Punching exercise will create a microfracture in the knuckles and grow stronger. Like I mentioned he always use the right-hand fist for training and never shown using the left arm fist for punching. In several scenes, he faces his enemy and beaten with his strong right-hand punch. Mostly a single punch create devastating damage to his enemies.