Do you ever hobble around like an old man? Or ache like your grandmother? Your body can look, feel, and act like that of a significantly younger or older person, depending on many factors, including how active your lifestyle is.
Functional body age is a measure of how well the body works in your daily life. It is based on how well multiple muscle groups and body systems work together in accomplishing everyday tasks such as reaching for an object on a shelf, standing from a seated position, or throwing a ball. Your functional age is a much better indicator of aging than your chronological age.