It sounds like you're asking about average height growth and whether it's normal for males to stop growing in height around the ages of 21 or 22.
In general, most males tend to experience their final growth spurt during their teenage years, typically completing most of their growth by the age of 18 to 21. Growth plates, which are areas of developing cartilage at the ends of long bones, close after puberty, which signals the end of height increase.
While the average height for adult males varies by region and population, many males do reach their maximum height by their late teens or early twenties. Growth after this age is rare but can sometimes occur due to factors like genetics or hormonal influences.
If someone is still experiencing growth past the age of 20 or 21, it could be due to delayed maturation or other health-related factors. However, it is relatively uncommon for significant height increases to happen after this age range.
If there are concerns about growth or development, it is always best to consult with a healthcare professional.