Hi, my husband and I started the PB two weeks ago today and are finally getting on the Forum to say hi and lurk around . It's been great so far, although we have found a few questions along the way: The first, most pressing: Has anyone ever had their fingernail beds turn blue? Not the whole bed, just the moon. It appears in searching the web this may have to do with a lack of oxygen. We wondered if anyone else has experienced this during their carb flu? Thanks for the support, the recipes and the general excitement this site (and you who've posted) offers. On to week THREE!