Well I'm back from Thorpe Park, and I'm totally shattered - must have walked miles today!
Unfortunately I have drank NO water today - just didn't get a chance - which is so unlike me. Felt a bit rough middle of the day (probably lack of water!) so needed to eat, so had a burker king flame grilled chicken salad - ate the chicken and a bit of the salad, then felt better - hopefully won't be knocked out of ketosis. Hopefully drinking no water won't harm me = going to try and get a litre down before I crawl upstairs to bed!