يتحقق المدرب الشخصي من وضعية الجسم والتوازن.

Because Arabic often uses a verb-first sentence pattern in Modern Standard Arabic. This is called a verbal sentence.

So:

• يتحقق المدرب الشخصي... = literally Checks/verifies the personal trainer...
• Natural English translation: The personal trainer checks...

You could also say:

• المدرب الشخصي يتحقق من وضعية الجسم والتوازن.

That is also correct, but it puts the subject first, which can sound a little more emphatic or topic-focused. In this sentence, both versions are fine.

Here, يتحقق means checks, verifies, or makes sure.

It comes from the verb تَحَقَّقَ. In this pattern, it often has the sense of:

• to verify
• to make sure
• to check whether something is correct

So in this sentence, the trainer is checking the person's body posture and balance.

A useful distinction:

• يتحقق من = checks / verifies
• يَتَحَقَّق without this meaning can sometimes mean be fulfilled or come true, depending on context

So the preposition من is very important here.

Because the verb is commonly used as يتحقق من, which means to check / verify something.

So:

• يتحقق من وضعية الجسم = he checks the body posture
• يتحقق من التوازن = he checks the balance

This is just how the verb is normally constructed in this meaning.

Compare:

• تأكد من = made sure of
• تحقق من = checked / verified

So من is not optional here if you want this meaning.

This is a noun + adjective structure:

• المدرب = the trainer
• الشخصي = personal

In Arabic, adjectives usually come after the noun they describe.

So:

• المدرب الشخصي = the personal trainer

Also, the adjective must match the noun in:

• definiteness
• gender
• number
• case

That is why both words have الـ:

• المدرب = the trainer
• الشخصي = the personal

Together: the personal trainer

This is an iḍāfa construction, often called a genitive construction or possessive phrase.

It literally means something like:

• posture/position of the body

Parts:

• وضعية = posture / position
• الجسم = the body

So:

• وضعية الجسم = the body posture / the posture of the body

Important point about iḍāfa: The first word usually does not take الـ, even if the whole phrase is definite.

So Arabic says:

• وضعية الجسم

not:

• الوضعية الجسم

Because الجسم is definite, the whole phrase becomes definite.

Because in Arabic, definiteness in an iḍāfa phrase works differently from English.

In وضعية الجسم:

• وضعية is the first term of the iḍāfa
• الجسم is the second term

The first term usually does not take الـ The second term determines whether the whole phrase is definite.

So:

• وضعية جسم = a body posture / posture of a body
• وضعية الجسم = the body posture / posture of the body

This is very normal Arabic grammar.

Because it is another noun being checked, and here it is treated as a definite item:

• وضعية الجسم = the body posture
• التوازن = the balance

The conjunction و joins them:

• من وضعية الجسم والتوازن
• of the body posture and the balance

In Arabic, when two coordinated nouns are both definite, it is normal to mark each one as definite.

So this does not mean that التوازن is part of the iḍāfa with الجسم. It is a separate coordinated noun.

Grammatically, الجسم directly belongs only to وضعية.

So the structure is:

• [وضعية الجسم] و [التوازن]

That means:

• the body's posture
• and the balance

In context, many readers may naturally understand balance as body balance too, but grammatically الجسم is only attached to وضعية.

If you wanted to make body balance explicit too, you could say:

• وضعية الجسم وتوازن الجسم
• or وضعية الجسم وتوازنه

Those make the connection clearer.

Yes. يتحقق is in the imperfect form, which often corresponds to the present tense in English.

Depending on context, the Arabic imperfect can mean:

• is checking
• checks
• does check
• sometimes even a near future meaning

In this sentence, the most natural reading is a habitual present:

• The personal trainer checks the body posture and balance.

So it sounds like something the trainer normally does as part of the job.

Because the subject المدرب الشخصي is:

• singular
• masculine

So the verb is also singular masculine.

Here the basic agreement is straightforward:

• يتحقق = he checks / verifies
• المدرب الشخصي = the personal trainer

If the subject were feminine, you would expect a feminine verb form. If it were plural, agreement rules would depend partly on word order, but that is a bigger topic.

In this sentence, singular masculine is exactly what you would expect.

A fully vocalized version would be:

يَتَحَقَّقُ المُدَرِّبُ الشَّخْصِيُّ مِنْ وَضْعِيَّةِ الجِسْمِ وَالتَّوَازُنِ.

Why these endings?

• يَتَحَقَّقُ → indicative imperfect, so it ends in -u
• المُدَرِّبُ → subject of the sentence, so nominative
• الشَّخْصِيُّ → adjective matching المُدَرِّبُ, also nominative
• مِنْ وَضْعِيَّةِ → after من, so genitive
• الجِسْمِ → second part of iḍāfa, genitive
• وَالتَّوَازُنِ → coordinated with a genitive noun after من, so genitive too

In normal Arabic writing, these short vowels are usually omitted.

It is pronounced approximately:

ya-ta-ḥaq-qaq-u

A few points:

• ح is a strong breathy h sound, not the ordinary English h
• ق is a deep q sound, produced farther back than English k
• the ّ (shadda) on ق means that consonant is doubled

So تَحَقَّقَ is not just ta-ha-qaqa. The middle q is held slightly longer:

• ta-ḥaq-qaqa

And in the sentence:

• يَتَحَقَّقُ = ya-ta-ḥaq-qaq-u

The doubled consonant is an important part of the word.

Yes. Depending on the nuance, Arabic could also use other verbs, for example:

• يفحص = examines
• يراقب = monitors
• يتأكد من = makes sure of
• يدقق في = checks carefully / scrutinizes

But يتحقق من is a good choice when the idea is checking or verifying that the posture and balance are correct.

So the difference is roughly:

• يفحص = examines more physically or clinically
• يتحقق من = checks/verifies
• يتأكد من = makes sure of

In this sentence, يتحقق من sounds natural if the trainer is making sure everything is correct.