Is there anything aside from the 'paperwork' side of preparing for an emergency that you can do? eg take certain vitamins, etc so that if an emergency does occur you've given your body the best 'preparation' you could? Just wondering as in the scenario of having an operation you've got pre-warning and can do things to get your body in the best position possible for non-blood surgery, but what about just in general day-to-day living in case of 'unforseen circumstance?