Drinking water improving sanguine adaption

Log Snippet: <98%hp 97%m 98%mv 34510tnl> civilized 8 PM drink canteen You drink water from a metal canteen insulated in a wolf's pelt. You do not feel thirsty. You have perfected sanguine adaptation (100%)! I grepped my entire log directory, and this actually happened twice the time above and once when I drank from a barrel (didn't catch it the first time) every other improve was from drinking a bloody skin