What is the origin of the saying Warm the cockles of your heart?

The phrase "warm the cockles of your heart" likely originates from the Latin Word "cochlea," meaning "heart," and is associated with the innermost part of one's being or emotions. The term "cockles" refers to the heart's chambers, suggesting a deep-seated warmth or affection. It gained popularity in the 17th century, often used to describe feelings of comfort or joy that uplift one's spirits. Over time, it has come to signify anything that brings emotional warmth or happiness.