ट्रेनर न तो दौड़ता है, न ही आराम करता है।

It is the Hindi way to express neither ... nor ....

So the sentence is built like this:

• न तो दौड़ता है = neither runs
• न ही आराम करता है = nor rests

This pattern is very common in Hindi when you want to deny two things together.

In this kind of paired negative structure, Hindi normally uses न, not नहीं.

So:

• न तो ..., न ही ... = the normal neither ... nor ... pattern

By contrast, नहीं is the usual negation for a single clause:

• ट्रेनर दौड़ता नहीं है = The trainer does not run.

So न is not random here; it belongs to this specific construction.

They help create the correlative pair.

• न तो sets up the first half: neither
• न ही introduces the second half: nor

The word ही often adds emphasis, something like indeed / even / at all, but in this structure it mainly helps the sentence sound natural and complete.

A learner-friendly way to think of it is:

• न तो ... = neither ...
• न ही ... = nor ...

Yes. That is also correct and very common.

For example:

• ट्रेनर न दौड़ता है, न आराम करता है।

This still means The trainer neither runs nor rests.

The version with न तो ..., न ही ... can sound a bit more structured or emphatic, but both are natural.

The -ता form here is the habitual form.

In this sentence:

• दौड़ता है = runs / does run
• आराम करता है = rests / does rest

This habitual form often expresses:

• a general habit
• a repeated action
• a characteristic behavior

Because the subject is understood as masculine singular, the verbs are:

• दौड़ता
• करता

If the subject were feminine singular, they would become:

• दौड़ती
• करती

The verbs agree with the subject, ट्रेनर.

Hindi present-habitual verb forms show gender and number. Here the speaker is treating ट्रेनर as:

• singular
• masculine

So the sentence uses:

• दौड़ता है
• करता है

If the trainer were female, you would say:

• ट्रेनर न तो दौड़ती है, न ही आराम करती है।

If the subject were plural, you would use plural agreement:

• ट्रेनर न तो दौड़ते हैं, न ही आराम करते हैं। or, more naturally with a clearer plural noun,
• ट्रेनर लोग न तो दौड़ते हैं, न ही आराम करते हैं।

Because आराम is a noun meaning rest, and Hindi very often makes verbs by combining a noun with करना.

So:

• आराम = rest
• आराम करना = to rest

This is extremely common in Hindi. Other examples are:

• काम करना = to work
• सफाई करना = to clean / do cleaning
• फ़ैसला करना = to decide / make a decision

So आराम करता है literally looks like does rest, but in natural English it is simply rests.

Most naturally, this sentence has a general / habitual sense, not a clearly right-now sense.

That is because दौड़ता है and करता है are habitual forms.

So it usually means something like:

• he neither runs nor rests
• he does neither of those things
• that is not what he does

If you specifically want right now, Hindi usually prefers the progressive:

• ट्रेनर न तो दौड़ रहा है, न ही आराम कर रहा है।

That means he is neither running nor resting at this moment.

Because each half is basically its own clause:

• न तो दौड़ता है
• न ही आराम करता है

Repeating है makes the sentence balanced and fully explicit.

In casual speech, Hindi sometimes drops repeated words if the meaning is obvious, but in standard, careful Hindi this full form is very natural.

It is a borrowed word, ultimately from English trainer, and words like this are very common in modern Hindi.

Hindi often uses loanwords for jobs, technology, sports, and modern life, such as:

• डॉक्टर
• कोच
• मैनेजर
• ट्रेनर

Even when the noun is borrowed, the Hindi grammar around it still works normally. So the verb still agrees with the intended gender and number of the person:

• masculine: ट्रेनर दौड़ता है
• feminine: ट्रेनर दौड़ती है

Hindi word order is somewhat flexible, but this sentence is already in a very natural order.

Current order:

• ट्रेनर न तो दौड़ता है, n ही आराम करता है।

You can change the order of the two actions if you want:

• ट्रेनर न तो आराम करता है, न ही दौड़ता है।

That changes the emphasis slightly, but not the core meaning.

What you usually want to keep intact is the pairing:

• न तो ...
• न ही ...

So even if the sentence order shifts a little, those two parts should stay clearly matched.