To determine the number of 8-ounce glasses of water to drink each day, what is the first step in the calculation?

The first step in calculating the number of 8-ounce glasses of water you should drink each day is to divide your body weight by 2. This approach is based on the guideline that a general recommendation for water intake is to consume half your body weight in ounces. For example, if someone weighs 150 pounds, dividing this by 2 gives 75 ounces of water as an ideal daily intake. Since each glass contains 8 ounces, understanding how many glasses this equates to involves a further calculation. This method aligns with common hydration guidelines and is an effective way to personalize water intake recommendations based on an individual's body weight.