Diverse group of young and older people exercising at the gym doing leg flexes as they lie on their backs on their mats in a receding row, focus to an attractive young blond girl in the foreground Shutterstock Image - Diverse group of young and older people exercising at the gym doing leg flexes as they lie on their backs on their mats in a receding row, focus to an attractive young blond girl in the foreground - ID: 244733578