Researchers used MRI imaging to measure disc changes in office workers during their workday.
After just 4 hours of continuous sitting:
- Measurable disc height loss occurred in the lower lumbar region
- Pressure increased where most people experience pain
- Discs began losing fluid under sustained compression
This happens silently. You don't feel it occurring.
But when participants followed a simple protocol of standing and stretching every 15 minutes, their disc height remained stable. No damage occurred.
The conclusion: movement prevents disc damage. Prolonged static sitting causes it.
From Pressure to Chronic Problems:
Repeated pressure on spinal discs triggers a degenerative process:
Early stage: Disc outer layers weaken. Inner material begins bulging. You might feel nothing yet.
Progressive stage: The bulge worsens, pressing on nerve roots. Pain develops, sharp, aching, or radiating into legs.
Advanced stage: In severe cases, outer layers tear. Disc material leaks out, compressing nerves more severely, causing intense pain or numbness.
Chronic stage: The disc loses structural integrity. Vertebrae shift, causing additional complications that become increasingly difficult to reverse.