I am aware that MJ bags are heavier than other bags and I am currently impatiently awaiting my first I was wondering: 1) Which bag you use most 2) How strong you think you are/how often you work out (not including carrying your MJ!) 3) How often you have to switch/rotate arms/shoulders? I just wanna be prepared, because I am NOT looking to part with her anytime soon! Thanks! I can't wait to hear your responses!