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It tests whether muscle compensates for low brown fat, and finds an earlier shivering onset instead.\nexposure: Gradual cooling to 18.6 degrees C for non-shivering thermogenesis and 11.6 degrees C for shivering onset\nevidence_span: {\"source_cache\": \"artifacts/cold-research/32948898.abstract.txt\", \"locator\": \"Indexed abstract; zero-based, end-exclusive Unicode character offsets\", \"file_sha256\": \"699fc07665c5f8800951348b6948dba539ed6aed5d1d354d4793be8f9f731b6a\", \"start_char\": 0, \"end_char\": 1697, \"text_sha256\": \"699fc07665c5f8800951348b6948dba539ed6aed5d1d354d4793be8f9f731b6a\"}\n[cold-p32948898] Multiorgan contribution to non-shivering and shivering thermogenesis and vascular responses during gradual cold exposure in humans. 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