The total lung capacity of human beings is 6 litres. Lung capacity refers to the volume of air that can be held by the lungs at various phases in the respiratory cycle.
By the age of 25, the lungs in a healthy adult fully mature and operates at optimal capacity. As humans age, the function of the lungs start to deteriorate, and it is a normal phenomenon. However, if any breathing difficulties are experienced at a young, there might be an underlying problem that requires an immediate medical diagnosis.
Explore other fascinating concepts by registering at BYJU’S Biology.