We are emotional creatures, everything around us creates a vibration within us, be it happiness, anger, joy, frustration. There are times when I feel like I'm floating on cloud 9, life is moving in the right direction, satisfied with what is "now" and at the forefront. Then there are times when I feel the bottom has fallen out, I'm plummeting so fast to the dark side my head is spinning, I can't calm my breath and the fire is scolding hot. Either situation can be observed as "really high" or "really low" and with that comes emotions.
Scientists have developed several theories about how emotions are generated based on subjective feelings, physiological responses, and expressive behavior. Read more: www.humanillnesses.com