Some bodybuilders and athletes use trenbolone for its muscle-building and otherwise performance-enhancing effects. [ citation needed ] Such use is illegal in the United States and many other countries. The DEA classifies trenbolone as a Schedule III controlled substance under the Controlled Substances Act .  Trenbolone is classified as a Schedule 4 drug in Canada  and a class C drug with no penalty for personal use or possession in the United Kingdom .  Use or possession of steroids without a prescription is a crime in Australia .  The infamous "duchess" cocktail administered to Russian athletes at the Sochi Winter Olympics consisted of oxandrolone , metenolone , and trenbolone. 
PeruRail operates the Bimodal Service (Bus + Train), a service that combines bus and train travel, departing and returning to Cusco City, between January and April. These months comprise the rainy season in Cusco, when part of the railway is closed for safety reasons to avoid possible contingencies as a result of landslides. At this time of year, the railway concessionaire, Ferrocarril Transandino ., performs reinforcement works on the rails. For this reason, trains are unable to travel between Cusco and the Sacred Valley during these four months of the year.