1. Gastric Juice: This is the fluid produced in the stomach that helps digest food. It contains a high concentration of hydrochloric acid (HCl), giving it a pH of around 1.5 to 3.5, making it very acidic.
2. Urine: While the pH of urine can vary depending on diet and other factors, it is generally acidic, ranging from 4.5 to 8.0. The kidneys help regulate the body's acid-base balance by excreting acids through urine.
3. Sweat: While sweat is generally slightly acidic, it can become more acidic during intense physical activity or when the body is under stress. This is due to the production of lactic acid, a by-product of muscle metabolism.
