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Is Drinking a Gallon of Water Per Day Too Much?

Is Drinking a Gallon of Water Per Day Too Much?

April 28, 2023

taylor picture
By: Taylor Ford
Executive Editor 



  • Drink half your body weight in ounces of water daily.
  • Add additional water depending on activity and climate.
  • Clear to lemonade urine 👍 dark urine 👎.


Water is essential for our bodies to function properly, but how much do we really need to drink each day? Is it possible to get too much of a good thing? The answer may surprise you, as it varies depending on factors such as age, gender, and activity level.

Understanding how the body processes and excretes water will give you a better idea of how much water your body needs daily.

In this article, we'll explore the recommended daily intake of water and the benefits of proper hydration.


The answer is yes, but it would take far more than a gallon per day to do you harm.

Hyponatremia, or water intoxication, can result if you consume enough water to the point that you begin to dilute the level of sodium in your blood.

Your kidneys can excrete between 20 to 28 liters, or 5.2 to 7.3 gallons per day under normal circumstances.

So, to answer the question "Is a gallon of water a day too much?"

You may not want to drink an entire gallon in a couple of minutes, but gradually drinking a gallon throughout the day could actually be good for you!


Let's start with a basic question first, as converting from the US system to the metric can be a bit confusing.

How many ounces are in a gallon? 
128 ounces = 1 gallon

How many liters in a gallon?

3.78 liters = 1 gallon.

There are differing opinions on how much water is considered healthy; beyond the various factors to account for like age, body weight, activity, and climate.

Of the method's I've researched's was the best calculation: Half your body weight in ounces as a baseline, and adding hydration to that number based on activity and climate. A 200 pound man would at a minimum need 100 ounces as a baseline per day.

 how much water do you need a day chart

Other experts say 8 ounce glasses of water, 8 times a day (64 oz, 2 liters or half a gallon.). Simple enough, right? Well, The Institute of Medicine of the National Academies recommends:

Women get 2.7 liters (91 oz, 3/4 gallon) per day.

Men get 3.7 liters (125 oz, ~1 gallon) per day.

The difference here, is that the Institute of Medicine is assuming you get 20% of your daily water intake from consuming vegetables and others foods.


  1. Peak physical performance. Your joints need water to cushion the shock of movements, and a dehydrated body will be less able to maintain the synovial fluid that prevents your bones from butting up against each other.

  2. Good skin, hair, and nails. A dehydrated body will conserve and hold any water it still has for vital body processes, which means your natural appearance will lose some of its luster. Healthy skin will have a natural 'glow' about it which will disappear if your body isn't getting enough water.

  3. Promoting good urinary health. Frequent dehydration can potentially lead to kidney damage. In fact, kidney stones are a well-known side effect of insufficient water intake - a pain that no one wants to experience!


Dehydration occurs when your body loses more fluids than it takes in. This can happen for a variety of reasons, including not drinking enough water, sweating excessively, or experiencing diarrhea or vomiting.


Some common signs of dehydration are:

  • Thirst
  • Dry mouth
  • Dark urine
  • Fatigue
  • Dizziness
  • Confusion

If you experience any of these symptoms, it's important to drink more water and seek medical attention if necessary.


While water does not necessarily give you energy per se, being well-hydrated does create an environment in your body that allows you to be energetic.

If you're suffering from acute or chronic dehydration, then you will absolutely feel more energy once you bring your body's levels back to where they need to be. Water is one of the fundamental building blocks of life, and it's critical that you give your body what it needs. 


Dehydration impacts the body both mentally and physically. Even losing just 1 to 2 percent of your body water can dramatically impact your motor skills, responsiveness to stimuli, short term memory, mood, and reaction time.

In addition, dehydration can lead to a higher heart rate but lower stroke volume, meaning that your heart needs to work harder for less return. This will be especially noticeable during bouts of strenuous physical activity, as your ability to both move and think will be severely curtailed and lead to daytime fatigue, especially when you are out in the sun -- since you will sweat and lose even more fluids which will make it even harder to move.

If your body is unable to maintain its balance of electrolytes, then you will feel sluggish and tired, and your muscles will feel unresponsive. If you've ever experienced any symptoms along these lines, then you will definitely need to increase your water intake.


Electrolytes are minerals that carry an electric charge and are crucial for maintaining proper fluid balance and nerve and muscle function in the body.

When we sweat or engage in physical activity, we lose electrolytes, particularly sodium and potassium.

Replenishing these electrolytes by drinking water with added electrolytes can help prevent dehydration, improve athletic performance, and support overall health.


Drinking water with electrolytes can have several benefits:

Helps prevent dehydration:

When we lose fluids through sweating, urination, or other means, we also lose electrolytes. Replacing these lost electrolytes by drinking water with added electrolytes can help prevent dehydration and maintain proper fluid balance in the body.

Enhances athletic performance:

Electrolytes are essential for muscle function, and dehydration can lead to muscle cramping, fatigue, and reduced athletic performance. Drinking water with added electrolytes can help improve endurance, reduce muscle cramps, and increase energy levels during exercise.

Improves overall health:

Electrolytes are crucial for several bodily functions, including nerve function, digestion, and bone health. Drinking water with added electrolytes can help ensure that the body has the necessary minerals to support these functions and maintain optimal health.

One very important thing to note about electrolytes, beyond the fact that it's what the plants crave, is to be very mindful of the potentially high levels of sugar in most sports drinks.

We recently put together a complete guide to healthy*ish energy drinks if you are into that, check it out!

Foods that help you stay hydrated.

Did you know certain foods can help with hydration? Foods that that contain high amounts of water and electrolytes that can replenish fluids lost through sweating or other means. Here are some examples of hydrating foods:


Watermelon is over 90% water and contains electrolytes like potassium and magnesium, making it a great choice for hydration.


Cucumber is also high in water, containing around 96% water content. It also contains electrolytes like potassium and magnesium.


Celery is a good source of water, containing around 95% water content. It also contains electrolytes like potassium and sodium.


Tomatoes are around 94% water and contain electrolytes like potassium and magnesium.


Oranges are a great source of hydration, as they contain over 80% water and are also high in electrolytes like potassium.


Pineapple is another hydrating fruit, containing around 87% water and electrolytes like potassium and magnesium.


Spinach is a good source of hydration, containing around 92% water. It also contains electrolytes like potassium and magnesium.

Coconut water:

Coconut water is a natural electrolyte drink that contains high amounts of potassium, sodium, and magnesium, making it an excellent choice for hydration.


Bananas are made up of about 75% water and are a good source of electrolytes, particularly potassium. They are also a good source of carbohydrates and fiber, making them a great choice for fueling the body during physical activity and aiding in recovery after exercise.


Your body may not be made up of 97% water, as a man it's actually more like 60%, but that doesn't change how important water is to your health! It is the most abundant resource on earth, very inexpensive, and can't be your best self without it! Stay hydrated, my friends!


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