Various beverages, only water and moderate tea are healthy. Drinking poor-quality tea is also very unhealthy; many people develop issues from it, not just due to pesticide residues. Even without pesticide residues, problems can arise from drinking it. There's a lot to learn here—people who haven't abstained for a few years won't understand. I personally think all other kinds of drinks are unhealthy—alcohol, coffee, milk tea, fruit juice, soda, and so on are not good things.