Physical inactivity contributes to multiple chronic disease pathways.
Established operating principles
Output System · Adaptation System
Last reviewed: August 11, 2026
EVIDENCE BY TOPIC
Movement and physical activity
Physical activity, inactivity, bodily demand, and long-term capacity.
The entries below are connected by subject, not arranged as a protocol or a complete literature review.
Open an individual claim to see what the evidence supports, what it does not establish, which sources are carrying the interpretation, and where the claim appears in The Human OS Manual.