Jabo

I could try to muster up a somewhat scientific explanation, subject to critcism of course. Perhaps, this feeling is one of elevated senses. Your subconscious uses every nerve in your body, every sensory receptor, to evaluate a situation. Once your subconscious has enough information, it prompts you to take action, but controls your every movement precisely, all the way down to how your skin wrinkles. It uses this wrinkling action to control the dice, which it knows exactly what position they are in, to cause them to move in a predetermined way which gurantees the needed/desired result.

I'm sure this feeling is what also makes heros in wars.