  The anti-doping side argue that restriction on the use of performance-enhancing methods is justifiable. They typically appeal to any of the following arguments: (a) performance enhancement runs counter to the intrinsic nature of sport by undermining its central purpose – the cultivation and display of sporting excellence (Devine, 2011; Sandel, 2007); (b) performance enhancement compromises the fairness of competition by providing its users with an unfair advantage (Douglas, 2007; Loland, 2002); (c) performance enhancement exerts a negative and dangerous influence on society, especially young people, by spreading acceptance of drug use (Pound, 2006); (d) performance enhancement is intrinsically immoral as it is the expression of a morally corrupt character or violates a moral value (e.g. authenticity or naturalness) (Bonte and Tolleneer, 2013; Habermas, 2003; Sandel, 2009); and (e) performance enhancement is harmful to participants (Hølm, 2007; Kayser and Broers, 2015; Savulescu, 2015).