Here is the contextual sentence:
Pregúntenle a la top model Lineisy Montero, quien, junto con sus compañeros, saltaba entre cada foto para calentarse el alma.
My understanding of calentarse is that it connotes the idea of getting mad, angry, etc. I intuit that in the above sentence, in this context, calentarse is referring to figuratively warming one's soul. However, I do know that these photos that are referenced in the above sentence were taken in very cold weather wherein the attire wasn't appropriate for the temperature. Is it warming their soul figuratively or their body literally? I'm not able to verify this usage of 'calentarse' in this context.
Any guidance will be greatly appreciated.