Coffee does count as water intake as coffee does actually hydrate you.
It used to be thought that coffee was actually dehydrating because of the diuretic effect but even with the diuretic effect the coffee is still hydrating.
Although you still need to drink some water, tea, juice etc but coffee is good for you and hydrating for you as well.
For most people, moderate coffee consumption can be incorporated into a healthy diet.
Moderate coffee intake of coffee which is about 2–5 cups a day is linked to a lower likelihood of type 2 diabetes, heart disease, liver and endometrial cancers, Parkinson's disease, and depression.
Like so many foods and nutrients, too much coffee can cause problems, especially in the digestive tract.
But studies have shown that drinking up to four 8-ounce cups of coffee per day is safe.
Sticking to those boundaries shouldn't be hard for coffee drinkers in the U.S., since most drink just a cup of java per day.
The effect of coffee consumption on the immune system, studied in 15 men and women, showed that the responses to PHA and Con A were about one-third lower during coffee drinking compared to a period of abstinence from coffee (117335, 99856 and 181236, 153315, P less than 0.004, 0.009 respectively).
Drinking coffee each morning does have several health benefits, but too much can raise your risk of cardiovascular disease.
A cup of coffee may be just what you need to get going in the morning.
A second cup is to get out the door, and a third (OK, even a fourth) is likely if you're especially tired.