Christopher EllisCEO Dynamic Physio Therapy

Biopsychosocial Pain Model: Stress, Sleep & Adaptation Explained #shorts

10 Sept 2026 · 1 min

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In this short video, Christopher Ellis explains the biopsychosocial model of pain, emphasizing how insufficient sleep disrupts hormonal balance, impairs immune function (notably natural killer cells), raises blood sugar, and creates a heightened stress state. He connects these physiological changes to reduced adaptability, arguing that the body’s ability to handle stressors diminishes without proper recovery. Ellis reinforces his point with the concise equation “stress + recovery = adaptation,” describing adaptation as the process of becoming stronger, faster, or better, and framing stress as the stimulus that must be balanced by recovery for positive adaptation.

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This model, the biopsychosocial model of pain, helps us understand the why behind pain. It also puts into context the sleep thing, right? So bad things happen to your body if you don't sleep. Hormones are dysregulated. The natural killer cells in your body that hunt down cancer are inhibited. Your blood sugar goes up. So lack of sleep puts you in a very stressed state as is. So now your body has less adaptability, less ability to handle whatever you throw at it. Right. And remember this equation too. I love this. It kind of explains everything very succinctly. Stress plus recovery equals adaptation. What's adaptation? It's getting better, stronger, faster, whatever you want to be. So stress as in stimulus or stressor,