Make walking/running speed increase with max health

[cjameshuff]

Or at least, reduce the penalty of wearing armor. A good diet lets you add muscle mass and build energy reserves, so you should be more able to keep moving while encumbered by heavy loads.

This would not only give you more incentive to maintain a broad diet once you have good armor, it would add further incentive to not die and lose the ability to move quickly while wearing it.