Hi Reader, Annual physicals track the same familiar vital signs and lab values. But for people who want to be proactive about your health, it’s clear those numbers are late indicators. They tell you when risk has already accumulated enough to manifest as disease. A different set of markers—drawn from exercise physiology, metabolic research, and geroscience—would be employed if instead of diagnosing disease, we wanted to think about levers to remain strong, capable, and independent. We’ve...