Frailty and Loss of Independence Don’t Start in the Muscles…They Start in the Nerves Most people assume frailty begins with muscle loss. It often begins earlier, in the nervous system. Your muscles only move when your brain sends signals to activate them. With aging, those signals become less efficient. Motor units (the connection between nerves…

When ‘Low Endurance’ is the Wrong Problem Older adults are often told they need to “build endurance.” But in many cases, endurance is not the real limitation. And addressing it the wrong way increases their risk. Endurance describes how long someone can keep going. Reserve describes how well the body recovers after effort. These are…