Why Does My Lower Back Feel Stiff and Locked When I Wake Up in the Morning?
1. Introduction Morning lower back stiffness, often described as a locked or rigid sensation immediately upon waking, is primarily caused by nocturnal intervertebral disc imbibition, the accumulation of fascial stasis, and normal circadian cycles of systemic inflammation. While asleep, the human spine is unloaded from the gravitational forces of standing. This allows the spinal discs … Read more