Dialogue: At the Gym

Talking about exercise pulls together three everyday systems: reflexive verbs (baviti se, vježbati), frequency adverbs that say how often (redovito, rijetko, triput tjedno), and the accusative of duration that says how long (sat vremena, cijeli sat). All of it runs in the plain present tense, because a workout routine is a habitual fact. This short exchange between two gym-goers shows the pattern you'll reuse every time you describe a routine — sports, study, sleep, anything you do for a stretch of time.

The dialogue

— Ana: Bok! Često te viđam ovdje. Koliko puta tjedno dolaziš? — Bruno: Bok! Vježbam triput tjedno, obično sat vremena. — Ana: Bravo. Ja se baš trudim, ali dolazim prilično rijetko. — Bruno: Najvažnije je biti redovit. Baviš li se još kojim sportom? — Ana: Trčim vikendom, otprilike pola sata. A ti? — Bruno: Ja igram košarku ponedjeljkom, pa se ovdje samo malo istegnem. — Ana: Pametno. Ja uvijek preskočim istezanje, pa me poslije sve boli. — Bruno: Moraš se istezati! Odvoji bar deset minuta. — Ana: Imaš pravo. Koliko dugo se ti već baviš teretanom? — Bruno: Već dvije godine. Sad mi je to dio dana. — Ana: Super. Onda se vidimo opet u srijedu! — Bruno: Vidimo se! Sretan trening!

Grammar in action

Vježbati — the workhorse exercise verb. Vježbati ("to exercise / work out / practise") is the everyday verb for training. It is a regular -a verb in the present (vježbam, vježbaš, vježba…) and can stand alone (vježbam triput tjedno) or take an object (vježbati trbušnjake "to do abs"). It is not inherently reflexive, which distinguishes it from istezati se below.

Reflexive verbs — baviti se, istegnuti se, istezati se. Several routine verbs carry an obligatory se. Baviti se ("to do/practise an activity") takes the instrumental of the activity: baviti se teretanom ("to do the gym"), baviti se sportom. Istezati se / istegnuti se ("to stretch") and truditi se ("to make an effort") are also reflexive — the se is part of the verb's identity, not a separate "oneself".

As a question, baviti se inverts with li, and the activity still sits in the instrumental — here the indefinite kojim sportom ("any sport").

The conjugation and case behaviour of baviti se is on baviti se, and the broader class of se-verbs on reflexive verbs.

The accusative of duration — sat vremena, pola sata, deset minuta. How long an activity lasts goes into the accusative, with no preposition. Sat vremena ("an hour", literally "an hour of time"), cijeli sat ("a whole hour"), deset minuta ("ten minutes"). English uses "for" here ("for an hour"); Croatian uses a bare accusative. Note pola sata mixes in a genitive after pola ("half"), but the duration slot itself is accusative.

Why durations take the bare accusative — and how it differs from "at/on" time phrases — is laid out on the accusative in time expressions.

Frequency adverbs — redovito, rijetko, triput tjedno. How often is carried by adverbs (redovito "regularly", rijetko "rarely", uvijek "always", često "often") and by count phrases (triput tjedno "three times a week", vikendom "on weekends"). The instrumental of a day name expresses a recurring "on X-days": ponedjeljkom ("on Mondays"), vikendom ("on weekends"). These sit naturally before the verb or at the clause edge.

The full set of frequency adverbs is on quantity and frequency adverbs.

Vocabulary

Culture & register note

Key Takeaways

• Vježbati ("to work out") is a plain -a verb; baviti se takes the instrumental (baviti se teretanom).
• Reflexive verbs like istezati se and truditi se carry an obligatory se that is part of the verb, not "oneself".
• How long something lasts is the accusative of duration with no preposition: sat vremena, deset minuta.
• How often uses frequency adverbs (redovito, rijetko) and counts (triput tjedno); a day in the instrumental means "on X-days" (ponedjeljkom).
• A routine is described in the plain present tense, because it states a habitual fact.