The biggest reason for why Muslims sit and drink water and drink this is the Sunnah of Prophet Muhammad. Sitting in Islam is considered to be Sunnah. At the same time, standing and drinking water is considered to be disliked in Islam and sitting is a better way.

Prophet Muhammad Saheb himself used to sit and drink water and since then it is considered to be Sunnah to drink water. At the same time, science also believes that many health related losses like acidity, pressure on kidneys and joint pain etc. can be the problem of drinking water and drinking water.

There are 6 numbers of drinking water in Islam: 1) Say "Bismillah" before drinking water, 2) Drink with right hand, drink, 4) Drink, 4) See it before drinking water, 5) Drink water in three sips, and 6) After drinking water, say "Alhamdulilalah".

Muslims do not drink all water at once, but intermittently drink water in three sips. This rule is also related to science. Many studies have shown that drinking water at once without stopping damages the muscles and nerves.

It is necessary to say "Bismillah" before drinking water in Islam. It has always been asked to use the right hand to drink water. It is the message of Prophet Muhammad not to eat and drink with left hand, because Satan eat and drink with left hand.

However, in some circumstances, water can be drunk even by standing in Islam. Prophet Muhammad used to drink water from Jamjam. Since then, all the Muslims stand and drink the water of Jamjam. Some people believe that by standing and drinking the water of Jamzam, it spreads in every part of the body.