This leads to the unwanted “burning” sensation we’ve all felt during anaerobic exercises such as sprints and resistance training ( 2, 3).Ĭontrary to popular belief, most research no longer points to lactic acid or lactate as the main cause of burning or muscle fatigue. Too much hydrogen in the working muscles decreases the pH of your muscles, creating an acidic environment. While researchers don’t yet fully understand this process, they have determined that a major byproduct of the anaerobic pathway is hydrogen (H+). Instead, they must switch to a different pathway - the anaerobic pathway - to produce ATP. As a result, your muscles cannot rely on oxygen to produce adenosine triphosphate (ATP), your body’s cellular energy source ( 2, 3). One of these factors is high intensity exercise, also known as anaerobic exercise.ĭuring anaerobic exercise, your body’s demand for oxygen exceeds the available supply. However, certain health conditions and external factors can disrupt this balance. This regulation is referred to as the acid-base balance and is controlled mainly by our kidneys and lungs ( 1). Interestingly, the pH of our bodies is tightly regulated, which ensures that they function properly. For example, our blood has a pH of about 7.4, while stomach acid is highly acidic, with a pH of 1–3 ( 1). The pH level of the human body varies depending on the part of the body. Anything lower than 7.0 is acidic, and anything above 7.0 is alkaline ( 1). ![]() ![]() In chemistry, pH is a scale used to grade how acidic or alkaline (basic) a solution is.Ī pH of 7.0 is considered neutral (pure water has a pH of 7.0). ![]() To understand how sodium bicarbonate works, it’s helpful to first understand the concept of pH.
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