When we talk about being there is difficult, if not impossible, to separate the physical from the mental, but this way of thinking is not at all improper, indeed! The two are so closely related that, for example, a small headache can easily ruin my day and make us literally unbearable. When one speaks of nervous tension and stress is easy to understand how the body and mind are closely connected: if we do not feel calm our body is affected in a very strong with several demonstrations.