How far into induction were you when you first posted? Sometimes in the first few days your energy can get pretty low...part of the "low carb flu" sometimes talked about.

In my first week or so I was having headaches which no amount of acetominophen or ibuprofen would take care of (and that's unusual for me). I finally attributed it to low blood sugar, so for a couple of days I allowed myself a couple of dried apricot halves, carefully including them into my daily carb count. They took care of the headaches. Since then, though, I can eat very low to zero carbs and not have a problem. I've read that we can have very low blood sugar and be ok with it, it just takes our bodies time to adjust to it.