Coffee is a good alternative to water because of the many health benefits it appears to confer.
Coffee is high in natural polyphenols, which are micronutrients that have been linked with preventing cancer, high blood pressure, and cardiovascular disease. “This also is why we think those who drink two to three cups of coffee a day show lower rates of diabetes than those who do not drink any coffee,” Eric Rimm, professor in the Departments of Epidemiology and Nutrition at Harvard T.H. Chan School of Public Health, said in an October 12, 2015 Wall Street Journal article.
Rimm also noted that black coffee, in particular, contains nearly zero calories, so is a very good water substitute. And it’s healthier than soda “for almost all health reasons,” he said.
Read The Wall Street Journal article: Coffee Talk: How It Stacks Up Against Water