One reason would be that many times, when you have a cold you run a fever.And when you run a fever, you dehydrate easily. So by drinking lots of water, you stay hydrated.
because the persons want to drink plenty of water
That depends on the subject of the sentence. For example a first or second person subject, such as "I" or "you" would require "need." I need to drink plenty of water. Third person, with the exception of third person plural, uses "needs" John needs to drink plenty of water. Also, any time a group is referred to in the singular such as "this team" you use needs. However, if you were to say a proper name like "the cardinals" you would use need. In short it's: I/you/they/we need to drink plenty of water. John/he/she/ needs to drink plenty of water. "The basketball team" needs to drink plenty of water. "The Globetrotters" need to drink plenty of water.
Most colds go away in a few days if you drink plenty of water and cover your mouth when you sneeze or cough. Check your temperature often, because some colds lead to fevers. If the cold gets worse, you should see a doctor so that they can prescribe you proper medication.
drink plenty of water
Drink plenty of water.
Eat right, Drink plenty of water, Get plenty of sleep, and Exercise!
Drink plenty of water.
drink plenty of water
drink plenty of water and do not drink soft drinks and soda, and do not smoke
The most healthy drink is water. Water is the gateway to the rest of your body and it keeps you hydrated. It is very important to drink plenty of water.
Water and plenty of it!!!!!!!!
drink plenty of water.