Because humans have five senses: feel, see, taste, hear, and smell. When you step on a nail you basically going to feel it and you brain can sense that and it can trigger nerves which can cause pain.
The most recent Dietary Guidelines for Americans<span>, released in January 2011, recommend that </span>all adults eat at least half their grains as whole grains<span> – that’s at least 3 to 5 servings of whole grains. Even children need 2 to 3 servings or more. Recommendations in Canada’s Food Guide are almost exactly the same. (Not surprising, since the human body changes little from country to country!)
Hope this help </span>
D is the rightful answer for this question. Prolonged stress can create and even promote bitter diseases such as cold, flu, and heart disease.
