Many people wake from a dream not with a clear image or story, but with a physical sensation — a weight in the chest, cold in the bones, a sharpness at the back of the neck they can't explain. This is not imagination. This is the nervous system completing work it began during sleep.

During REM sleep, the brain does not simply generate visual narratives. It runs full-body simulations: activating the autonomic nervous system, engaging proprioceptive pathways, modulating thermal regulation and muscle tone, and processing emotional memories through the limbic and somatic systems simultaneously. The physical sensations people report — heaviness, heat, paralysis, floating, pain, numbness — are the residue of these processes.

Body temperature during sleep correlates directly with autonomic nervous system state. Warm or hot dream sensations accompany elevated sympathetic arousal — the body in high activation. Cold or glacial sensations correlate with parasympathetic withdrawal or active emotional suppression. Neutral thermal state indicates a regulated, homeostatic sleep — the body processing without urgency.

Viscous encoding maps to enteric (gut-brain) restriction under load. Sharp maps to prefrontal hyperactivation. Void maps to limbic downregulation — the brain protecting itself. Gritty maps to surface-level threat processing. Fluid maps to distal proprioceptive loosening — boundaries softening. Numb maps to systemic sensory attenuation — the body reducing its own signal volume during high-load states.

Silent soundscapes indicate the auditory cortex turned fully inward — the deepest form of self-processing. Hum indicates held, low-level vigilance. Voices indicate active social-threat processing — interpersonal dynamics being worked through. Chaotic indicates auditory overwhelm — the brainstem's threat-detection systems firing across multiple channels.

Each profile represents a recognisable nervous system state — not a personality type, but a functional description of what the body was doing during sleep. Activate the controls to discover which one matches your dream.

The Residue profile carries 8 rotating variants — each distinct in tone and emphasis — because some physiological states are too specific for a single taxonomy entry. These patterns were derived from somatic psychology literature, sleep neuroscience research, and clinical reports of body-level dream experience. They are not diagnostic categories.

Somatic memory — the physical residue of a dream — dissipates faster than visual memory. Before coffee, before your phone, before anything: 90 seconds. Map what your body carried through the night. The data is in your body right now.