I doubt it dude. I think stuff like height/arm length/skeletal frame are all genetic. The thing is, the 'reach' format is outdated and is about to be replaced by arm length in most boxing/mma schemes eventually. As wingspan is not really of that much importance, arm length is your real reach. I'd say you should measure your arm length, as a big part of your reach may be torso, which isn't effecting your reach.
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