Keep in mind that the test was validated on a sample of 50-80 year olds. Although the test will be trivial for virtually any young human, fit or not, I think you can see that for someone approaching 80, it could be a decent test of whether they are maintaining strength and flexibility versus merely maintaining a healthy weight by eating like a human being. As for the parade of commenters complaining about the test, all I can hear is "REEEEEE!"