Duke: All your strength, all your power, all your love. Everything you've got. Right now!
When Apollo is getting ready to fight the Russian boxer, he comes out with white boxing gloves on. Sometime during the announcement of the fighters, the camera shows Rocky and Apollo standing in Apollo's corner. Apollo is jumping up and down while pointing with an ungloved and untaped hand, He is saying "I want you". The next time they show Apollo, he has his gloves on again.
Sylvester Stallone, actually tore a muscle in his heart while filming the training sequence in which he lifts the sleigh that everybody was sitting in. Filming had to stop for two months so doctors could make sure that he healed properly and the chances for him having a heart attack would be reduced.