>>2054619Most of all, you want the heavier stuff against your back, not on the "outer side" pulling backwards. Ideally, the heavier stuff sits right between your shoulder blades and your waist, that's what there'll be the least amount of torque on your cervicals, ans strain on traps/neck.
As far as packing, sleeping gear in the bottom, as it doesn't need to come out in the day, plus acts as padding. Then food an water, the heaviest . Clothes and raingear on top