Vežbam u teretani svakog dana.

Vežbam is the 1st person singular present tense form of vežbati.

In this sentence, it means I work out / I exercise.

A useful thing to know is that vežbati can also mean to practice in other contexts, for example:

• Vežbam klavir. = I practice the piano.
• Vežbam srpski. = I practice Serbian.

So the exact English translation depends on context.

Because Serbian verbs usually already show who is doing the action.

Vežbam ends in -am, which tells you it means I am exercising / I exercise.

So ja (I) is often omitted:

• Vežbam u teretani svakog dana. = neutral, natural
• Ja vežbam u teretani svakog dana. = I work out at the gym every day, with extra emphasis on I

Serbian often drops subject pronouns when they are clear from the verb form.

It is present tense.

Here the present tense is used for a habitual action:

• Vežbam u teretani svakog dana. = I work out at the gym every day.

Serbian uses the present tense this way just like English can use the simple present for routines:

• I work out every day.

Also, vežbati is an imperfective verb, which fits repeated or ongoing actions well.

Because after u meaning in / at a place, Serbian uses the locative case for location.

The base form is:

• teretana = gym (dictionary form, nominative)

But after u for location, it becomes:

• u teretani = in the gym / at the gym

So:

• teretana → nominative
• u teretani → locative singular

This is a very common pattern.

This is a very important case distinction:

• u teretani = in/at the gym → location → locative
• u teretanu = into/to the gym → direction/motion → accusative

Compare:

• Vežbam u teretani. = I work out at the gym.
• Idem u teretanu. = I’m going to the gym.

So the case changes depending on whether you mean where something happens or where someone is going.

Svakog dana means every day.

It is built from:

• svakog = genitive singular of svaki (every)
• dana = genitive singular of dan (day)

So literally it is a genitive time expression.

This is a normal Serbian way to express repeated time:

• svakog dana = every day
• svake nedelje = every week
• svake godine = every year

English speakers often expect something more literal, but this pattern is very natural in Serbian.

Yes. Svaki dan is also very common and natural.

So both of these work:

• Vežbam u teretani svaki dan.
• Vežbam u teretani svakog dana.

They both mean I work out at the gym every day.

Broadly speaking:

• svaki dan often feels a bit more conversational and straightforward
• svakog dana can sound slightly more formal, fuller, or more stylistically marked

But in everyday speech, both are perfectly normal.

Literally, it is in the gym.

But in natural English, the best translation is often at the gym.

So:

• Vežbam u teretani. can be translated as either
• I exercise in the gym or
• I work out at the gym

The right English choice depends on what sounds most natural in context.

Yes. Serbian word order is fairly flexible because endings show grammatical relationships.

The sentence:

• Vežbam u teretani svakog dana.

is a natural, neutral order.

But you could also say:

• Svakog dana vežbam u teretani. = emphasizes every day
• U teretani vežbam svakog dana. = emphasizes at the gym

The meaning stays basically the same, but the focus changes.

Because Serbian has no articles like English a/an and the.

So teretana can mean:

• a gym
• the gym

The exact meaning comes from context.

In this sentence, u teretani is naturally understood as at the gym / in the gym, and English usually needs the, but Serbian does not.

Often yes, but the nuance can be slightly different.

• vežbam = I exercise / I practice
• treniram = I train / I work out

In a gym context, both can sound natural:

• Vežbam u teretani svakog dana.
• Treniram u teretani svakog dana.

But:

• vežbam is a bit broader and can also mean practice
• treniram often sounds more like training, sometimes with a stronger sports/fitness feeling

So vežbam is a very good choice here, especially for a general statement.