Blood-spinning

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Blood-spinning is a method used by athletes to shorten the time of the healing of an injury. Small samples of the athlete's blood are spun in a centrifuge in order to increase the concentration of growth hormones. The sample is then injected into the wound, which can then heal as much as five times faster. However, utilising this procedure can fall foul of the World Anti-Doping Agency (WADA) due to possible non-natural elements introduced into the athlete's body.