Drinking Only Water - Days 2, 3, and 4

Excuse the lack of posts but I'm still "chugging" along with the challenge.  I'll admit that the biggest issue has been the habit aspect.  I find myself reaching for other drinks in the fridge and i have to stop myself.  (I don't live alone, so i was unable to simply throw out all the other beverages.)

The only other minor issue that i've noticed is that i'm getting small headaches.  A small annoyance.  I'm not sure if this is because i'm used to drinking caffeine regularly, or if i'm simply not getting enough water.  I haven't been drinking as much in the past few days.  I'll up the water intake and see if that helps.