Every couple disagrees. Some arguments are about household chores, while others involve finances, parenting or misunderstandings that build up over time. Many people assume that healthy relationships are the ones with the fewest conflicts, but decades of relationship research suggest otherwise. Psychology says the difference often lies in how couples reconnect after an argument. One behavior that frequently appears in resilient relationships is shared laughter. This does not mean laughing at a partner's feelings or using humor to dismiss a serious issue. Instead, researchers have found that genuine, mutual laughter after emotions begin to settle can help reduce stress, rebuild emotional closeness and make constructive conversations easier. Relationship experts say the disagreement still needs to be resolved, but laughter can create the emotional conditions that make resolution more likely.