"Well then" Connor said thoughtfully, and there was a subtle shift in his persona, as if he moved from geeky school kid to professor. "You need to understand the hand itself. It's full of bones. Easily broken bones, so we want to protect our hands, fingers and thumbs" he said, stretching out his own hand and wriggling his fingers,
"And then we want to make a fist" he said continuing on "First, the fingers curl in tightly. Don’t fold your fingers flat against your palm, but begin by rolling your fingers in starting at the tips, joint by joint, rolling into a tight fist. When done correctly, the meat of your thumb follows the line of your first three fingers" Connor demonstrated by showing her this.
He then continued on "Second, your thumb goes over your fingers… Never close your fingers over your thumb, or you will dislocate it when you make impact. After rolling your fingers in at step one, you then bend and close your thumb over your first two fingers, making sure your thumb does not protrude beyond the second knuckle of your fingers. If it does, when you hit you will break your thumb" he demonstrated this, showing what not to do as he talked then what to do.
"Third, and most often overlooked even by ‘skilled’ fighters, do not bend your wrist, If you bend your wrist and make hard impact, you will fracture your wrist."
