For the last few weeks I've been lowering my carb intake and have been sticking generally to a range of 30-60 grams per day. Eating mostly meat and eggs and coconut products, veggies with maybe one meal/day.
This morning I had about a scoop and a half of non-paleo peanut butter swirl ice cream (planned, yummy, don't regret it a bit), and about 10 minutes later I felt wiped out! The last time I had such a wave of exhaustion come over me in the middle of the day was back before I started taking synthroid for my hypothyroidism. I've treated myself before and have never experienced this.
Could that jolt of sugar have caused this tiredness? Generally I'd expect a short burst of energy, if anything, but not this time. As I've been weighing and tracking my food for a LONG time, I know that that amount of ice cream wouldn't push me over my recent daily carb max, so it would have to be something more than just a carb attack.
EDIT to note that I've always been a big fan of ice cream, and it's usually my treat of choice. Which makes this reaction even more strange!