As opposed to a mental one I mean... I feel totally crap! Head is in the right place but I feel like a wrung out dishcloth. My head is dizzy, I feel faint and its strange but it feels like my eyes are not working properly... Never had this before. It's left me unable to do stuff round the house, I feel very nauseas in waves.. I have taken headache tabs but its not a headache iyswim! ... I have had the usual 'come down' from carbs etc and the going in to ketosis feeling but this is something else entirely...! On a plus, the noisy belly has stopped x