Cold Comfort, Certified: A five-year survey of session-start temperatures across 96 sports-club changerooms, men's sheds, choir halls and allotment sheds, and the certification floor the School set from what it found. Resolving to Cold Comfort, Certified: A five-year survey of session-start temperatures across 96 sports-club changerooms, men's sheds, choir halls and allotment sheds, and the certification floor the School set from what it found.…