James is in South Wales where he's wired up and locked inside a cryo-lab to discover the impact of cold on the human body. A temperature of 10C seems pretty mild doesn’t it - yet James is shocked at the profound stress it puts on his body. Today we discover why cold is a killer and what you can do about it if you’re struggling to heat your home.

Presenter: James Gallagher
Producer: Gerry Holt