Tom Gakes is a top Dutch cyclist. His sponsors provide him with Arkworld supplements. At www.tomgakes.com/nieuws he reveals how he resisted the chance of enhancing his performance with drugs. He writes, "the Arkworld products they sponsor me are performance enhancing, they are actually improving my health and not on the WADA prohibited list." This page provides a link to a detailed testimonial by Tom Gakes setting out his use of Arks 1, 2 and 3 and the specific benefits he gets from them. Arkworld products have a WADA (World Anti-Doping Authority) certificate. If you engage in arduous sport why are you not taking Arkworld supplements? They work for me. They work for some of leading football clubs and for at least one British gold medallist.