Pijem vodu tokom treninga.

Because vodu is the accusative singular form of voda (water).

In this sentence, vodu is the direct object of pijem (I drink), so Serbian uses the accusative case.

• nominative: voda
• accusative: vodu

This is very common with feminine nouns ending in -a:

• knjiga → knjigu
• kafa → kafu
• voda → vodu

Because the preposition tokom requires the genitive case.

So:

• basic form: trening
• after tokom: treninga

This is a fixed grammar pattern:

• tokom dana = during the day
• tokom časa = during class
• tokom treninga = during training / during the workout

Tokom means during or in the course of.

In tokom treninga, it means during the workout/training session.

It is slightly more formal or neutral in tone than some alternatives, but it is completely normal. Other ways to say something similar are:

• za vreme treninga = during training
• u toku treninga = in the course of training

All are understandable, though tokom treninga is very natural.

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

Pijem already means I drink, so ja is not necessary.

• Pijem vodu tokom treninga. = I drink water during training.
• Ja pijem vodu tokom treninga. = I drink water during training.

Adding ja is possible, but it usually adds emphasis, contrast, or clarity.

Pijem is the 1st person singular present tense of the verb piti (to drink).

So:

• ja pijem = I drink / I am drinking
• ti piješ = you drink
• on/ona/ono pije = he/she/it drinks
• mi pijemo = we drink
• vi pijete = you drink
• oni/one/ona piju = they drink

In Serbian, the present tense can often translate as either:

• I drink
• I am drinking

depending on context.

This is about aspect, which is very important in Serbian.

• piti / pijem = imperfective, focuses on an ongoing, repeated, or general action
• popiti / popijem = perfective, focuses on completing the action

So in this sentence, Pijem vodu tokom treninga means something like:

• I drink water during training
• I am drinking water during the workout

It describes a regular or ongoing action.

If you said Popijem vodu, that would suggest I drink it up / I finish the water, which is a different idea.

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

These are all possible, with slightly different emphasis:

• Pijem vodu tokom treninga.
• Tokom treninga pijem vodu.
• Vodu pijem tokom treninga.

The most neutral version is the original one. Moving words around usually changes focus or emphasis, not the basic meaning.

For example:

• Tokom treninga pijem vodu. emphasizes when
• Vodu pijem tokom treninga. emphasizes what

Trening is a very common loanword in Serbian, borrowed through international usage. It means training, practice, or workout, depending on context.

It behaves like a normal masculine noun in Serbian:

• nominative: trening
• genitive: treninga
• dative: treningu
• accusative: trening
• instrumental: treningom
• locative: treningu

So even though it is a borrowed word, it declines like other Serbian nouns.

A good rough pronunciation is PEE-yem.

It has two syllables:

• pi-
• -jem

A few quick guides:

• pijem ≈ PEE-yem
• vodu ≈ VOH-doo
• tokom ≈ TOH-kom
• treninga ≈ TREH-neen-ga

The j in Serbian is pronounced like English y in yes.

So pijem is not like English pie-jem, but more like pee-yem.

Usually it means during training in a general sense. It does not automatically mean every single second of the workout.

So Pijem vodu tokom treninga normally means:

• I drink water while training
• I drink water during my workout

It describes the action as happening in that time period. Whether that means once, several times, or as a habit depends on context.

Yes, you can, but the nuance is a little different.

• tokom treninga = during the training session
• na treningu = at training / at practice

Both can work, but:

• tokom treninga focuses more on the time span
• na treningu focuses more on the location/event

So:

• Pijem vodu tokom treninga. = I drink water during training.
• Pijem vodu na treningu. = I drink water at training.

Both are natural, but the original sentence is slightly more precise about when the drinking happens.