Dear osuzana,

This is a hot potato on this board. There are the pure waterists who swear it must be water and nothing else and others who say you can drink what you like.

Everyone agrees you need to drink sufficient fluids - which means quite a lot. This diet is naturally diuretic so you need to make up the fluids. Also you need to flush out all those unburned ketones.

I just drink what I like and keep my head down.

Robert