[1]Dr. Paul Zak, also known as Dr. Love, is the Director of the Center for Neuroeconomics at Claremont Graduate University. Zak has written a book called The Moral Molecule [2] in which he advises people to hug eight times a day, because it releases the hormone oxytocin, evoking compassion and greater well being. I was glad to hear that hugging a pet counts, too.
Image via Magnificent Ruin [3]