It could be that Martin told himself that he was being a wuss to run away and mustered up the bravo to ask Zimmerman why he was following him AND THEN panicked anew when, thinking Zimmerman was going a weapon, punched Zimmerman who was merely reaching for his phone as he stated he was doing when Martin clocked him.
Hell, the saddest part of this whole situation is that it is entirely possible for it to be a complete and utter tragedy without either party being the "bad guy."
I corrected you earlier, and pointed you to the statute. If you repeat it again, you are lying.
"Feeling threatened" is the only prerequisite if you are in a habitation, dwelling, or vehicle.
Under the circumstances where Martin encounter Zimmerman, or vice versa, the use of force in self-defense is only legal to meet force with force.
Read the law. If you don't believe me, ask a lawyer. However, you are apparently not qualified to read the law and interpret it.
"Stranger danger kid" suddenly turns into "Gotta know-now Joe" cuz it's more reflexive a human instinct to feel good about yourself than it is to save yourself from perceived bodily harm doncha know.
Martin's pursuit of "scary" Zimmerman is akin to spotting a spooky-music Twin Peaks ten-foot-tall buzzsaw in an empty logging plant and (with no one around) saying to yourself...
"Hey, I think I'll go over and lick that thing. I'd look pretty cool."