Answer:
It increases the cushioning around his/her neck, head, and spine. Decreasing the amount of force impacting a person's head by limiting the distance it can fling forward. Decreasing the risk that a victim will project through the window or be ejected from the car.
It is called as Cardiothoracic surgeon
Using positive actions while communicating with others can affect you drastically, if you are a naturally positive person, then being a positive peer will cause less conflict. If you are continuously being rude or negative on purpose, it can cause conflict and violence, which is not good for your mental health. Higher stress levels also cause a number of health-related illnesses
Beacuse they helps us in many ways. They help to provide medicine .they give proper time when we should take medicine .