What is the most suitable age for a man's physique?

After the age of 25, a man is said to have entered the prime of life. This stage is 15, 25 to 40 years old. This stage is the best period for men's physique. After 40 years old, physical fitness will gradually decline. From 40 to 60 years old, people enter middle age, which is the best period of experience and level.