Part 1:Context.- Chapter 1:The Potential, Perils and Pitfalls of CrossFit: An Introduction.-Chapter 2:CrossFit: Fitness cult or reinventive institution.-Chapter 3:"You are the light in this darkness": CrossFit’s Populist Alternative to the Fitness Industry.-Part 2:Commodity.-Chapter 4:The Communication of Productive Fitness: How CrossFit Shapes a Branded Self Through the Embodiment of Exceptionalism.-Chapter 5:The CrossFit Games and the Sports-Media Complex.-Part 3:Community.-Chapter 6:CrossFit, Community, and Identity: A Gemeinschaft in a Liquid Modern World?.-Chapter 7:CrossFit as a Spiritual-but-not-religious Fitness Culture.-Chapter 8:"Something Broke": The Impact of COVID-19 Lockdowns and Exit Strategies on Christian CrossFit Communities and the Relationship Between Faith-Fitness-Space.-Chapter 9:CrossFit, Agency, and Communion: Exploring Well-being of Aging Adults Through Fitness Communities.-Chapter 10:Using CrossFit for Sport for Development and Peace: Can CrossFit build careers?.-Part 4:Contested terrain.-Chapter 11:rossFit for ‘at-risk youth’: Sustainable actions vs. disruptive situations.-Chapter 12:The boys, ‘The Girls’, and ‘The Heroes’: Reading gender in CrossFit Kids Magazine.-Chapter 13:CrossFit and Trauma: Gray Areas Between Healing and Self-Abuse.-Chapter 14:The fittest on earth": Deviant leisure and the use of performance and image enhancing drugs within CrossFit communities in the UK’.-Chapter 15:Making the invisible visible: Calling out racism within CrossFit.