He also might not survive, as Mangold writes, “So by all means, go ahead and worry about him.”
So the physicality of most comic-book blockbusters is on hold for Wolverine 3, which also negates a lot of what happened in, say, X-Men: Origins — Wolverine, where Logan was indestructible.
He drinks because his healing powers are fading, so he’s in a constant state of pain.
Should anyone in our story have the misfortune to fall off a roof or out a window, they won’t bounce.