The problem is that some people don’t like water but don’t want to add cordial (aka sugar… or poison to some) and it’s not particularly a pleasant experience drinking a glass of cold water in winter.
My take on it is that as long as you’re drinking some kind of fluids, you’ll be fine.
I drink a lot of green tea during the winter months and don’t touch a drop of tap water. Despite this containing caffeine which is a diuretic and despite going to the toilet more, I don’t experience any symptoms of dehydration. (The first sign for me is dry skin.)
Some people say that if you drink one cup of green tea then you have to drink a glass or two of water to balance things out otherwise you’ll be dehydrated. So if I go for 6 months without drinking any water, wouldn’t I die of dehydration? In my experience, I’ve found it not to be the case and that even drinking largely green tea and black coffee during the colder months, I experience no dehydration symptoms whatsoever.
So my advice is to drink what you want with these comments to bear in mind:
- water is best
- green teas are good choices for their antioxidant properties
- anything is better than not drinking at all, even a pint of beer (don’t drive afterwards!)
- if it’s not water, the drink will have some calorie value so will have to be counted as part of your total daily intake if you’re looking at losing weight
- zero calorie fizzy drinks can be included but can contain sweeteners such as aspartame which some say can cause cancer and some people may be allergic to
- too much caffeine may result in other health conditions