Pratiquer, vtr : to do, to play, to use, to apply, to implement, to know, to speak, to practice a religion.

Il faut pratiquer un sport au moins.
You have to do some form of exercise.

Elle pratique le passé simple quand elle écrit les romans.
She uses the simple past when she writes novels.

Ce magasin pratique des prix attractifs.
This store implements attractive prices.

Il pratique cinq langues.
He speaks five languages.

Elle se dit catholique mais ne pratique pas sa religion.
She calls herself Catholic, but she doesn’t practice her religion.