no, the only game i know of that had cross region compatible saves was pokemon, most do not, doesn't matter if its your own dump or .3ds or .3dz, if it doesn't work it doesn't work
Consuming 2000 extra kcal near a weigh measure, of course that will skew the results. It takes some time to remove that excess. Also, I want to get a clean measure, as good result as possible
It all depends on your routine and your personality. In the gym there's a lot of machines, and trainers that can draw you an exercise plan and help you. I find it easier to exercise in the gym than at home, because at home I'm just delaying.