By what mechanism does coffee=>BM? (Possible TMI)

I disagreed with the mistaken notion that having one’s bowels on a precise 24-hour schedule was a particular sign of good health. You piped up to say that your bowels are on a precise schedule, and I congratulated you. You didn’t provide any relevant information at all - your anecdote does nothing to prove that somehow your precise, ninja-like bowels make you healthier. You said that your bowels operate on a precise schedule. I’m certainly not going to argue with your statements to that effect. But that doesn’t even suggest, let alone prove, that such a precise schedule is somehow healthy.

As your own cite indicates.