What Is Potassium & How Does It Benefit Athletes?


The more time you spend in the gym, the more you hear people discussing electrolytes – “You gotta go low-sodium to get shredded,” “bro, watch your salt intake,” “I get so bloated from salty foods” etc. When it comes to salt, it is in fact an essential electrolyte that plays many vital roles in the body and should not be eliminated from anyone’s diet. Unfortunately, most people overindulge in the mineral, leading to a handful of unwanted side-effects and an emphasized focus on sodium by the general public. In the shadow of this focus lies a severely-undermined electrolyte that is equally if not more important: Potassium. Giving this mineral the due acknowledgement it deserves, we will discuss what potassium is, its benefits to the athletic body, and where one can obtain it.

What is Potassium?

Like its salty counterpart, potassium (K) is a naturally-occurring mineral that is essential to human performance. It is the third-most prevalent mineral in the body, and is used in a variety of physiological mechanisms including muscular contractions, autonomic nervous system maintenance, blood pressure regulation, fluid balance, bone growth, and kidney stone prevention, among others. The Food & Drug Administration states that most adults need to consume 3,500 to 4,700 milligrams per day, yet only 2% of the American population actually consumes this quantity – the other 98% is significantly undernourished! For optimal performance both inside the gym and in your everyday life, you should make sure to consume adequate amounts of potassium.

Water Retention & Fluid Balance

As mentioned before, potassium is an electrolyte that is extensively utilized by the body. Your body and nearly all of its mechanisms are dependent on sodium/potassium pumps, which is why both electrolytes are so essential and should not be eliminated from your diet!potassium for athletes

Many are aware that excess sodium is typically the culprit when it comes to bodily water retention or bloating (think back to the last time you had a salty restaurant or takeout meal – goodbye muscle definition!), but equally as many do not know that potassium is the key to preventing this retention. In fact, the American Journal of Kidney Diseases stated in a study that “dietary potassium restriction increases sodium and chloride retention, whereas potassium administration promotes both diuresis and natriuresis.” When sodium is consumed, it is absorbed into the body’s cells, bringing water along with it (to hydrate the body). This water is stored subcutaneously by the body, meaning it lies primarily between the muscles and the skin. When excess water is retained due to extra sodium consumption, your body will naturally store that water like it always does, yet only at the expense of a “bloated,” “full,” or “definition-lacking” physique. While this is only a temporary ailment that physique-conscious people commonly avoid by lowering their consumption of salty foods, sweating via exercise, supplementing with diuretics or other various tactics, consuming potassium may be the simplest answer! The body naturally strives to create a balance of electrolytes, so when potassium is consumed in the proper dosages, it pulls excess sodium & water out of cells through the electrolyte pumps and excretes them via urination (thus creating an electrolyte balance within the body). This approach, if you are already at a relatively low body fat percentage, can result in a harder and less-bloated physique.

Muscle Integrity

To this day, athletes and coaches alike preach the practice of eating a banana post-workout – and with good reason! Potassium, just like sodium, plays a significant role in muscular contractions & relaxations (thus enabling you to train hard), ensures proper recovery when ingested after strenuous exercise, and prevents excessive cramping due to electrolyte balance. In addition, potassium ions have a huge part in healthy brain activity and promote higher brain functionality (leading a potentially greater mind/muscle connection while training).


Last but not least, potassium is a significant benefactor to the nutrient digestion/absorption process of the food we eat. It assists in the extraction of nutrients from ingested foods and processes that food into energy while promoting an overall healthier bodily system. Even more exciting, potassium has been linked to increased muscle-protein synthesis and cell growth. This means your muscles can become bigger & stronger with ample potassium intake, which can lead to an increased metabolism due to the heightened caloric requirement of muscle tissue!

Sources of Potassium

Now that you know how beneficial (and essential!) potassium is, one question still remains: “Where can I get some?” Fortunately, here is a comprehensive list of the most common foods with high concentrations of potassium:

Sources of Potassium
White Beans (cup, cooked) 1004 mg
White Potato (average size, with skin) 926 mg
Acorn Squash (cup) 899 mg
Spinach (cup, cooked) 839 mg
Banana (cup) 806 mg
Yogurt (cup) 625 mg
Avocado (½ cup) 558 mg

Take-Home Message

If you haven’t heard yet, potassium is strictly essential for day-to-day living. For an athlete, the demand for the electrolyte is even more important. For optimal health and an ideal physique, aim to consume 3,500-4,500mg potassium a day while also regulating your sodium consumption as well. However, more is not always better, so please be sure to keep moderation in mind.

Remember, if you are drastically adjusting your electrolyte intake, you should consult a qualified health practitioner prior to doing so. So get out there, fill up on some potassium to help FUEL YOUR AMBITION and take your health to the next level!


Our articles should be used for informational and educational purposes only and are not intended to be taken as medical advice. If you’re concerned, consult a health professional before taking dietary supplements or introducing any major changes to your diet.

Jacob Masters

Jacob Masters

Writer and expert

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