If you watch a hammer thrower. Or if you create the action with a basket and some balls. As the hammer and or weight swings around you. You are constantly offsetting the motion of the basket with an opposite force. This is what accelerates the basket and or maintains the circle and the balance. If you move into the force created by the basket you are immediately off balance. Plus the basket slows down. Tension then tries to make compensations to regain control. The same skills or tasks in throwing the hammer are what happens in a golf swing. I have never had someone swing a weight around them and move into or the same direction the weight moves. It is not instinct. So try this simple motion and feel how your body moves where is force going in your feet. Then duplicate it in a swing.