A closer look
Your chronological age is a shockingly terrible indicator of your actual risk of dying; geriatricians prefer to rely on your frailty index instead. One of the most ruthless calibrators of this biological countdown is the Jamar hydraulic dynamometer. By simply measuring the maximum isometric force of your handgrip, doctors can accurately estimate your overall muscle mass, systemic inflammation, and neurological decline. A weak squeeze on this specific device predicts your near-term mortality far more accurately than the date printed on your birth certificate.
