I re-started on 12/29 and hit ketosis on or about 1/1. I had energy and now that I am rapidly losing and in deep ketosis I feel weak and thankfully my appetite has diminished too. I also feel dehydrated despite drinking so much water so I have started to take 1 tab of potassium each morning and slightly upped my protein from what I was consuming last few days but I am more weaker than ever. Good thing is that I am losing about 1/2 lb a day.