zimmerman's language in his call to police. suggesting his use of profanity implied hatred, a key point when trying to prove second degree murder. >> it seemed to me like mr. delariando was trying to highlight it, making it sound heightened, i don't feel it was that way at all. i think it was more a statement. >> also called to testify was the owner of the gym where zimmerman trained for less than a year as a weight loss routine. >> what number would you assign to his abilities? >> point five. >> less than one? >> yes. >> and arts experts demonstrated the so-called ground and pound technique of fighting. he said he saw trayvon martin use the night of the shooting. he said he's seen his share of fight aftermaths, just days