The technique is learnable, but the decisions around it (do you actually need it, what dose, how often, and is something else being missed) are medical judgements, and getting them wrong carries real cost
When it's chronically overloadedfrom running, standing for long periods, or even improper footwearit develops microscopic tears
Wu D, Cederbaum AI (2009) Oxidative stress and alcoholic liver disease
The WADA Prohibited List is among those rules, and identifies (by categories) which substances and methods are prohibited in-competition, out-of-competition, and in some cases, by specific sport
(2017) demonstrated that mouse embryonic fibroblasts (MEFs) derived from cGas / mice exhibited reduced senescence and underwent more rapid spontaneous immortalization, compared to wild-type counterparts