This is the 8757th most frequent Catalan word.
escalfarà
"Escalfarà" means "will heat" or "will warm" in English.
Here, "escalfarà" means "will heat up", referring to an action where water is heated by fire.
L'aigua es calentarà a foc lent.
The water will heat up slowly.
In this instance, "escalfarà" signifies "will warm up", which involves increasing body temperature through activity.
Aquest exercici t'escalfarà el cos abans de començar.
This exercise will warm up your body before starting.
"Escalfarà" here describes the action of warming, which is the Sun's effects on Earth's temperature.