Chin position is one of the most important factors and 99.9% of people coaching fighters have got it wrong. if your chin isnt in the right place your shoulders arent primed for attacks and your hips arent in optimal position to punch or move with strength, speed or control. Chin position effects everything.

I could go into a great amount of detail asto why scrap is correct but i dont have time, easier to just say listen to what he says. Greats dont count Tyson could break posture without it effecting his punch power or mobility because he was tyson and he was skilled.

The average joe blogs cant do what tyson does and cant punch like tyson because of the reasons scrap points out, bad positioning makes it difficult. if joe blogs is shown good positioning he has half a chance of hitting with power like tyson, kink his posture like tyson did and uve made it too difficult for average joe, he doesnt have the motor unit recruitment capacity to do it. Tyson did.