Fascia science
Sticky is not scarred: densification vs fibrosis.
Your back feels like it rusted overnight, so you imagine damage. Fascia research draws a line between two kinds of stiff, and which one you have decides what will help. Most everyday stiffness is the good kind: sticky, not scarred.
How to tell which story you are in
Honest heuristics, not diagnosis. Stiffness that eases with gentle movement and warmth behaves like densification: a thickened glide layer, and the kind that appears to reverse. Four things belong in front of a clinician instead. Stiffness tied to a specific injury or surgery. A hard restriction that never warms up. Progressive loss of range. Pain that sharpens rather than eases with motion. Go to check for fibrosis, and to rule out what stiffness can masquerade as.
What the sticky kind needs
Varied movement through the day, long slow lines, springy loading, and the patience of seasons. Patience matters, because even healthy collagen turns over on a timescale of months.
Written by Kyle Jenkin · updated August 31, 2026 · how we grade evidence
Sticky reverses. Start stirring.
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