What are your thoughts on this:

For every 8 ounce cup of coffee we drink we are supposed to drink 8 ounces of water, right? This is because coffee is a diuretic.

An 8 ounce cup of coffee averages 85 mg of caffeine, so that means that for every 1 ounce of caffeine we consume, we need to offset that with 1 ounce of water (approx).

So I switched to decaf coffee and my Coach told me that it doesn't matter if it's green tea, regular tea or decaf coffee it's still the same with the water: one cup of water for one cup of any other beverage. I asked her why and she said it's because while decaf coffee doesn't have AS MUCH caffeine, it still has some.

So let's do the math. On average decaf coffee has 10 ounces of caffeine whereas caffeinated has 85 - keeping the same formula in mind, that would mean that we could have 8 cups of decaf before needing 8 ounces (or 1 cup) of water.

I told this to my Coach and she had no answer except "that's what Head Office says". I'm a very fact based person and that doesn't work for me. Math is math and facts are facts.

I'm not saying I want to drink 8 cups of decaf a day, but if I have an extra one or two at 10-20 mg of caffeine, I only need an extra 1-2 ounces of water if the above formula holds true. And they always tell us the one for one reason is because of the caffeine, so it would have to, right?

IN GOD WE TRUST: ALL OTHERS NEED TO PROVIDE DATA :-)