heat up

US /hiːt ˈʌp/
UK /hiːt ˈʌp/
"heat up" picture
1.

calentar, recalentar

to make something hot or warmer

:
Can you heat up the soup for dinner?
¿Puedes calentar la sopa para la cena?
The sun quickly heated up the car's interior.
El sol rápidamente calentó el interior del coche.
2.

calentarse, intensificarse

to become more intense or exciting

:
The debate started to heat up as both sides presented their arguments.
El debate comenzó a calentarse a medida que ambas partes presentaban sus argumentos.
The competition is really starting to heat up.
La competencia realmente está empezando a calentarse.