The Body state refers to the physical symptoms and sensations associated with a particular feeling. For example, If I am experiencing fear, My heart rate would increase, My skin would develop goosebumps, my hair would stand up, and I may feel an uneasiness in the pit of my stomach. The body map if I am not mistaken is the physical presentation of these sensations in the parts of the body that create these reactions. For example, I may have the ability to notice the change of my heart rate, but another person could check my heart rate and prove that it has increased (meaning it is falsifiable). In the same way emotion precedes feeling, the body state's change precedes and influences the changes in the body state. This is a key element in understanding the neurobiology of feelings because it proves that feelings do not have to be private to the individual, and can be visible in PET scans, and therefore studied.