A hug is a physical expression of affection, in which two or more people put their arms around each other and squeeze tightly. It's a way to show love, care, comfort, and support through physical contact. Hugs can also be used as a sign of greeting, celebration, or farewell. They are often given between family members, friends, romantic partners, and even strangers in some cultures. A hug is a simple yet powerful way to connect with others on an emotional level.