Why Do We Cry When We Laugh? Unraveling the Science Behind Happy Tears

• Laughter-induced tears are not just emotional, but a complex physiological response involving the brain and body.
• The Hypothalamus, controlling emotions, can get 'confused' by intense joy, signaling tear production.
• Vigorous laughter causes facial muscle contraction, especially around the eyes, putting pressure on tear ducts and releasing tears.
• Prolonged laughter can lead to eye dryness; tears are produced as a protective mechanism to keep eyes moist.
• Tears act as a 'valve' to release intense emotions, helping the body return to emotional equilibrium, a concept known as 'Negative Affect'.