Actors make all sorts of sacrifices in the name of popular movies, and Guardians of the Galaxy is no exception.
Some people know that Karen Gillan, who plays the part of Nebula in both films, shaved her head for the part. This video takes you through the process she went through before filming, for the first installment, took place.
If this isn’t an example of how to make movies seem more real, then I don’t know what is.