Pain is crucial to realising what is good for your overall health. Pain is an unpleasant experience that helps to keep you alive by alerting to actual or potential bodily harm. It warns you when something might be wrong and gives you an opportunity to change or modify what you're doing to prevent further injury. However, pain is complex, and many other factors influence it. Much of what we used to believe about pain was from a book that was first published in 1644, pain