FEAR setting 101
Let's face it we have all been scared at some time or another. In fact, being scared and feeling fear is highly correlated with the successful evolution of homo sapiens so isn't all bad in the aggregate. The interplay between the amygdala and the body at large has a long history of getting us out of primal trouble and literally saving our skins. Fear and stress of this type are extremely useful in 'non-everyday-events'. So fear can be a massive motivator for instantaneo