(CNN)-If you really think about it, so many of us should be in a perpetual state of gratitude.

Which of these do you have going for you right now? Family. Friends. Love. Health. Freedom from war and natural disaster. Imagination. Community. A roof over our heads. Common decency. Hope. Opportunity. Memories. Financial stability. Favorite places. Days off work. Good weather. The golden age of television. Books. Music. Ice cream. Weekends. A friendly exchange. Something good that happened today. Something bad that didn't happen today. A good cup of coffee.

In this week's episode of CNN podcast Chasing Life, host Dr. Sanjay Gupta interviewed Christina Costa, a teacher and doctoral student at the University of Michigan who has studied neuroscience and psychology. She explained how you can see gratefulness on brain scans. The feeling lights up the "feel-good" neurotransmitters of dopamine and serotonin, which Gupta pointed out also decrease hormones like cortisol, associated with stress.

Listen to the interview at CNN.