You are practising the pause, not giving anything up. Once you have paused, go ahead and drink the water.

What the research says

A Cochrane review of oral naltrexone for opioid dependence makes the point in a harder setting. The medication does what it does pharmacologically, but people stopped taking it, so retention and adherence were the problem rather than the mechanism. That is a review of a medication, so it speaks to how hard it is to sustain an approach built on blocking, not to water glasses.

Strength of evidence: one line of research. A single study, or a theoretical account.