Merim puls posle vežbe.

Merim is the 1st person singular present tense form of meriti, which means to measure.

So:

• ja merim = I measure / I am measuring
• ti meriš = you measure
• on/ona/ono meri = he/she/it measures

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

• I measure my pulse after exercise (habitual)
• I’m measuring my pulse after exercise (right now / in context)

The exact English translation depends on context.

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

The ending in merim already tells you the subject is I.

So:

• Merim puls. = I’m measuring my pulse.
• Ja merim puls. = also correct, but ja is usually added only for emphasis, contrast, or clarity.

For example:

• Ja merim puls, a on meri pritisak.
  I’m measuring pulse, and he’s measuring blood pressure.

Here puls is the direct object of the verb merim, so it is in the accusative case.

However, puls is a masculine inanimate noun, and for masculine inanimate nouns, the accusative singular is the same as the nominative singular.

So:

• nominative: puls
• accusative: puls

That is why the form does not change.

Compare:

• Vidim sto. = I see a table.
  (sto is masculine inanimate, so nominative = accusative)

But with a masculine animate noun, the accusative usually changes:

• Vidim psa. = I see a dog.

In Serbian, possessive words like my, your, his, etc. are often left out when the meaning is obvious.

So Merim puls naturally means I’m measuring my pulse, not just a pulse.

If you want to make the possession explicit, you could say:

• Merim svoj puls. = I’m measuring my own pulse.
• Merim moj puls. = possible, but less natural in most neutral contexts

Usually, svoj is preferred when the subject and possessor are the same person.

The preposition posle means after, and it requires the genitive case.

The noun is vežba (exercise), and its genitive singular form is vežbe.

So:

• vežba = nominative singular
• vežbe = genitive singular

That is why you get:

• posle vežbe = after exercise / after the exercise

This is a very important pattern:

• posle časa = after class
• posle ručka = after lunch
• posle treninga = after training

In this sentence, vežbe is best understood as genitive singular, because it follows posle.

So posle vežbe means:

• after exercise
• after the exercise
• sometimes more naturally in English: after working out

It is true that vežbe can also be nominative plural or accusative plural in other contexts, but not here.

Examples:

• Vežbe su teške. = The exercises are hard.
  Here vežbe is plural.

• Posle vežbe idem kući. = After exercise, I go home.
  Here vežbe is genitive singular.

It can depend on context.

Vežba literally means exercise, but in real usage it can refer to:

• a physical exercise
• an exercise in a lesson
• a practice drill
• sometimes a workout session, depending on context

In this sentence, since you are measuring your pulse afterward, it most naturally suggests physical exercise.

In everyday Serbian, if you specifically mean after a workout/training session, people also often say:

• posle treninga = after training / after the workout
• posle vežbanja = after exercising

So posle vežbe is understandable and correct, but context matters.

Meriti is imperfective.

That means it is used for:

• ongoing actions
• repeated or habitual actions
• general statements

So Merim puls posle vežbe can mean:

• I measure my pulse after exercise (habitually)
• I’m measuring my pulse after exercise (in context)

A perfective verb would suggest a completed single act of measurement. A common perfective partner is izmeriti.

For example:

• Izmerim puls posle vežbe.
  This would point more toward I measure/check my pulse once after exercise or I take my pulse after exercise, with a more completed sense.

Learners should know that Serbian aspect is very important, and English often does not match it exactly one-for-one.

Yes. Serbian word order is fairly flexible, although some orders sound more neutral than others.

The most neutral order here is:

• Merim puls posle vežbe.

But you could also say:

• Posle vežbe merim puls.
  This puts more focus on after exercise.

• Puls merim posle vežbe.
  This can sound contrastive, as if you are emphasizing pulse specifically.

Because Serbian uses case endings, the meaning usually stays clear even if the order changes.

Vežbe is pronounced roughly like VEZH-beh.

The letter ž sounds like the s in measure or the g in mirage.

So:

• ve = like veh
• ž = the sound in measure
• be = beh

Approximate pronunciation:

• vežbe ≈ VEZH-beh

And the whole sentence:

• Merim puls posle vežbe.
  ≈ MEH-reem pools POS-leh VEZH-beh

These are only approximations, but they help English speakers get close.

Yes. Nakon also means after and also takes the genitive case.

So both are correct:

• posle vežbe
• nakon vežbe

In many everyday contexts, posle is a bit more common and conversational, while nakon can sound slightly more formal or written, though both are completely normal.

Examples:

• Posle vežbe pijem vodu.
• Nakon vežbe pijem vodu.

Both mean I drink water after exercise.