International Mirth Month is celebrated every March, promoting laughter and joy as a means to enhance mental health and well-being. Launched by Allen Klein, known as the "Jollytologist," this month encourages individuals to incorporate humor into their daily lives, highlighting the health benefits of laughter, such as stress reduction and improved heart health. Customs during this month include hosting comedy movie marathons, visiting comedy clubs for live performances, and sharing funny content on social media. Participants are also encouraged to create a "laugh log" to track what makes them laugh each day. The celebration serves as a reminder of the positive impact laughter can have on relationships and overall happiness.