Believe it or not, fingers DO have fat!! I sliced mine open chopping veggies this winter and the nurse commented on the fat in my finger (she wasn't being "rude"----my fingers aren't really fat even, she was just saying how it was sliced open so far that she could see the globs of fat........yeah, I know, lovely thought )

When I get below 125 or so, I can't even wear my wedding ring. And, I know it's not just water, although water weight loss or being cold (body fluid goes from the limbs to the trunk when you get cold) CAN temporarily cause your fingers to get smaller.