The story of 24 Hour Fitness is a compelling narrative of innovation, expansion, and vulnerability in the face of unprecedented global disruption. Founded in 1983 by Mark S. Mastrov in San Leandro, California, the company began as a single 24-hour access gym, a revolutionary concept at the time that catered to people with non-traditional schedules. By offering month-to-month memberships and round-the-clock availability, it democratized fitness access and rapidly expanded across the United States. Strategic partnerships with celebrities like Magic Johnson and Andre Agassi, sponsorship of the U.S. Olympic teams, and a central role in the hit TV show 'The Biggest Loser' elevated its brand to national prominence. By 2004, it had become the world’s largest privately-owned health club chain, with over 3 million members and $1 billion in revenue. However, its growth was fueled by significant debt, particularly after a $1.85 billion acquisition in 2014 by private equity firms. Even as the company pursued a digital transformation—launching the 24GO app and embracing personalized wellness—the foundation was fragile. Longstanding criticisms over membership practices and workplace discrimination hinted at deeper operational challenges. Then, in March 2020, the COVID-19 pandemic forced all 400+ locations to close overnight. With no revenue and $1.3 billion in debt, the business model collapsed. Despite suspending membership fees and securing a $250 million emergency loan, the financial strain proved unsustainable. In June 2020, 24 Hour Fitness filed for Chapter 11 bankruptcy, permanently closing over 130 clubs and furloughing nearly 18,000 employees. The human impact was profound: members like new parents and shift workers lost not just access to equipment, but vital routines and emotional sanctuaries. Many felt betrayed when refunds were replaced with nominal gift cards. Yet, the company reorganized swiftly, emerging from bankruptcy by December 2020 with $1.2 billion in debt eliminated and new ownership from investment firms Sculptor Capital, Monarch Alternative Capital, and Cyrus Capital. Since then, 24 Hour Fitness has focused on reinvestment, modernization, and adapting to a fitness landscape reshaped by at-home workouts and digital platforms. Its survival underscores the resilience required in the modern economy, where even industry leaders must continuously evolve to meet shifting consumer behaviors and external shocks. The case highlights critical policy considerations around consumer protection in corporate bankruptcies, the ethics of private equity ownership in essential services, and the societal role of fitness spaces as community hubs. Today, 24 Hour Fitness remains operational, but its journey serves as a cautionary tale about the fragility of scale without sustainability and a testament to the enduring need for adaptable, accessible health solutions in an unpredictable world.