The riddle of the Sphinx, according to greek mythology, was a question that all the travelers who want to access to Thebes needed to solve. The nature of the riddle varies with tradition, but almost all versions converged as follows: "What has four legs in the morning, two legs in the afternoon, and three legs in the evening?". Oedipus, the mythical greek king of Thebes was able to solve it, the answer was "the man", as we aged we crawl, walk, and in our final days we use a cane. The riddle was a reference to the effects that time have on people, and the imminent mortality fate that we all share. The riddle of life that the Sphinx could have today, would probably make allusion to the high consumptions of drugs and supplements that man do in order to stay healthy as we face the effects of aging.