The documentary explores how the human body reacts to different temperatures. It aims to educate the general public about how even small changes in temperature can affect our health. The documentary features interviews with experts and the public, as well as experiments conducted by the presenter. For example, one experiment shows how much energy is emitted by a household during winter. Statistics are also presented to emphasize facts about topics like energy usage. Cutaways, sound bridging, and experiments are used to engage viewers and support points made in the documentary.