There is a way your chest, hips and hands move and a way they do not move. Here is a drill that will help you strengthen your feel for impact.
How do you get your arms to straighten naturally, without effort? Watch Part 2 to strengthen your understanding of Impact.
The arms create a circular motion around the body in the golf swing the same way they do in a baseball swing and tennis swing. Here is how to get the arms to work in the right motion during impact.
How your wrists hinge is important, but not as important as making sure you do not force positions. Here is what I mean.