The original car shoulder and neck protective pillow has such a role? Increased knowledge, often driving friends should have some awareness, each time driving for more than 1 hour will feel the shoulder, neck muscles stiff, want to relax the muscles, because maintain a position for a long time to drive, will make the shoulder joint and neck muscle load increase. When the muscle hardens, the capillary blood distributed in it will also harden, resulting in the normal flow of blood, an important role of blood circulation is to transport nutrients and oxygen, recycling the body leads to fatigue.