Drink water
On this World Water Day drink pure water. Some say drink away from meals, e.g. at least 20 minutes before meals and an hour afterwards. Others say drink water at least at room temperature and perhaps warm first thing in the morning and well before breakfast.
Chinese medicine mentions drinking liquids at room temperature or warm. Some Chinese drink warm tea along with meals. Also, it is possible to drink either too much or too little water. If storing water, be careful of the type of container that you use so that metals or plastics etc do not leach into the water.