A good way I found to strengthen both arms is to do stationary shots. To do this turn your sword upside-down (hold it like a dagger) rest it against the ground, on top of a table and throw normal shots so the sword doesn’t move. Another way to do this is to grab a metal pipe railing and start thro...

From what I know (not much) if you were left handed you would never admit you were and if you did you would most likely have been killed.