Peer partnerships may be best-suited for some goals, and the article makes an effective case for that. But the title is unfortunate. It’s not an either/or thing. Mentoring can have a decisive influence for women especially. In her new book on gender equality in the workplace, Iris Bohnet cites research finding that men tend to be paired with influential mentors who actively advocate for them, while women tend to be paired with less senior mentors who merely advise and coach. (See Iris Bohnet, “What Works: Gender Equality By Design”)
Some bodybuilders and athletes use trenbolone esters for their muscle-building and otherwise performance-enhancing effects.  Such use is illegal in the United States and many other countries. The DEA classifies trenbolone and its esters as Schedule III controlled substances 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 allegedly administered to Russian athletes at the Sochi Winter Olympics consisted of oxandrolone , a metenolone ester, and a trenbolone ester.