Why is lactic acid a problem?

Lactic acid is a problem when it accumulates in muscles during intense exercise. This can cause muscle fatigue and pain, and can limit performance. Lactic acid is produced when the body breaks down glucose for energy. During intense exercise, the body's demand for energy increases, and more glucose is broken down. This can lead to a buildup of lactic acid in the muscles, which can cause them to become fatigued and sore.

In addition, lactic acid can also cause the body to produce more hydrogen ions, which can lead to a decrease in the pH of the muscles. This can further reduce muscle performance and cause muscle pain.

Lactic acid is also a problem when it accumulates in the blood. This can cause acidosis, which is a condition in which the blood becomes too acidic. Acidosis can lead to a number of health problems, including nausea, vomiting, and dizziness. In severe cases, acidosis can be fatal.