Originally Posted by MagnaNasakki
Chest, bro. Watch what has to move to deliver a punch.
It's also, generally, a good bet to aim for the chest against moving targets. More likely to get a good shot, and not air.
Exactly, 123ko seems to think you should focus on the chin
the head moves and as you said aim for the chest you will catch them on the chin as they roll and or slip.
if you look at the chin your going to have a hard time seeing those shots coming, and your opponent knows where your eyes are he knows what your zoning in on, looking at the chest you can see his movements while at the same time he will not know where your planning to score