the typical vascular cylinder of a dicotyledonous plant or a gymnosperm, consisting of a ring of collateral bundles of xylem, cambium, and phloem. Origin of eustele.
Tap water is fine in Barbados, go in any restaurant and they will ask if you want water then give a choice of bottled or tap. They wouldn't be doing that if the water was bad. It is one of the few places around the world that I will drink tap water. I certainly don't drink it in the UK.
However, there are some blood test results that were inaccurate brought by coffee and tea. Therefore, it is advisable to avoid them when you are fasting for blood work. Yes, you can drink water, but you should avoid other things like gum or cigarettes. It is also not advisable to have an exercise.