i think that being in shape is an often overlooked prep. not here at TSP, since we aim to "live a better life if times get tough, or even if they don't", but in general.
as an aside, what we do for our garbage cans up a hill much like you describe:
I pull the van around, open the trunk, load the kids in the trunk, have the 8-yo and the 10-yo grab the garbage can handles, and drive slowly up the hill. at the top, I arrange the cans for the truck to come, and the kids run back down trying to beat me turning around the car. they have to pull them down the hill by foot power. but for the next few years until they get big enough to be able to pull a full can up that hill, this is what we do.
side note: we only take the cans up every other week; one garbage, one recycle, and both about 2/3 full after 2 weeks.