Released in 1976, the original Rocky is a classic underdog story about a middling 30-year-old boxer who somehow manages to go the distance with the heavyweight champion of the word. Every movie in the series since then has mirrored that setup, finding ever more convoluted ways to make sure Rocky — or in the case of 2015’s Creed, his protégé Adonis Creed — starts out facing nearly impossible odds.
But just as integral to Rocky’s successful formula as its protagonist’s underdog status was his unorthodox training regimen, which started off with things like chugging raw eggs and punching sides of beef and eventually grew to encompass bizarre techniques such as chasing poultry and lifting horse carts.
Source: IGN.com The Rocky Movies' Weirdest Training Techniques