i am on day 5 too bro bro, i feel ok today, not too faint, did u drink water and have your shake early or did you just go headfirst into the jobs and have the shake after, cos i did that this morning and felt very faint, but after my shake and a full litre of water i felt ok, id say just make sure your topped up all the time, a body cant work with no fuel. you know? if you still feel shakey and faint tomorrow though i wud ask the pharmacist about it.. @claire1987 i know what you mean, the only thing stopping me drinking alcohol this weekend is that it takes you out of ketosis..i just have to keep telling myself that..and did anyone else notice that every ad on the telly is about food!!! never noticed that before!!!