Summarized by Masters of Longevity from Fight Aging!.
Argues for adding “movement span,” the period of easy, adaptive mobility, as a distinct functional metric alongside life span and health span.

Key Takeaways
- Movement span is proposed as a separate aging dimension tracking lifetime functional movement capacity.
- Decline in movement span can precede diagnosable chronic disease or result from reduced sensorimotor demand.
- Recognizing movement span could change clinical assessments and public health frameworks for aging.



