Tap water may taste foul. Make drinking more of a treat:
Try mineral water - still or fizzy - in a pretty glass. Add ice, a slice of lemon or lime, a fancy straw Aim for at least 4 glasses per FD and make these your me-time where you unwind for a few minutes.
Also boost fluids with low cal hot drinks: + Rooibos (naturally sweet) or herbal tea - e.g. ginger, mint, fenchel & aniseed. Optionally sweeten with a pinch of stevia powder. Mosely says that stevia is a herb which does not alter your gut flora, unlike other sweeteners + Coffee - yes it counts as fluid (and does not dehydrate) Have with unsweetened almond milk, which is only 4 cals for a 20 ml splash, much lower cal & lower GI than cows milk + Bovril. Only 10 cals per tesp.