Taking a warm bath or sitting by a fire or doing some exercise can also help the body warm up.

VOA: special.2009.12.30

Two reference points, freezing and blood-warm, you know,the human body.

两个参考点，水的）冰点和温血，也就是人的体温。

麻省理工公开课 - 热力学与动力学课程节选

While he was walking, his blood had kept all parts of his body warm.

VOA: special.2010.05.01

Its body was warm and heavy.

VOA: special.2010.03.20