Well, I'm now on day three and everything seems ok. However, there's one thing that puzzles me slightly. I tested my water this morning using one of the ketostix given to me by my counsellor, but, for some reason, the strip is showing up as a relatively darkish purple colour. Now, I've been following the diet to the letter so far and have been drinking at least three litres of water every day, so I'm not sure why I don't appear to be in ketosis. Am I doing something wrong?