One of Dr. Hinohara’s strongest beliefs was to never fully retire. He argued that retirement ages were set when people lived shorter lives, so now, with longer life expectancy, we should keep working or stay active much later. He himself worked up to 18 hours a day well into his 100sOne of Dr. Hinohara’s strongest beliefs was to never fully retire. He argued that retirement ages were set when people lived shorter lives, so now, with longer life expectancy, we should keep working or stay active much later. He himself worked up to 18 hours a day well into his 100s