Ne kadar yorgun olursam olayım, akşam kısa bir yürüyüş yapınca zihnim açılıyor.

It means no matter how tired I am or however tired I may be.

This is a very common Turkish way to express concession: something is true, but it does not change the result in the main clause.

So in this sentence:

• Ne kadar yorgun olursam olayım = No matter how tired I am
• ...zihnim açılıyor = ...my mind clears / I feel mentally refreshed

This is part of a fixed concessive pattern.

• olursam = if I am / if I become
• olayım = literally something like let me be / may I be

But in the pattern ... olursam olayım, you should usually understand the whole thing together, not word by word. It gives the sense of:

• no matter if I am
• however I may be
• regardless of how I am

So ne kadar yorgun olursam olayım is not translated literally as two separate verbs in English. It works as one structure meaning no matter how tired I am.

You will see similar patterns such as:

• Ne kadar meşgul olursan ol... = No matter how busy you are...
• Ne olursa olsun... = Whatever happens... / No matter what happens...

Because the tense and person marking are carried by olmak, not by the adjective.

Compare:

• Yorgunum. = I am tired.
• Yorgun olursam... = If I am tired...

In the second example, yorgun stays as a plain adjective, and olursam shows the meaning if I am.

So:

• yorgunum = a complete predicate by itself
• yorgun olursam = adjective + olmak carrying the grammar

That is why yorgunum olursam would be wrong here.

Yapınca comes from yapmak + -ınca and means when (one) does, once (one) does, or sometimes after doing.

In this sentence:

• akşam kısa bir yürüyüş yapınca = when I take a short walk in the evening

The suffix -ınca/-ince makes an adverbial clause. It connects one action to another:

• Eve gelince yemek yedim. = When I came home, I ate.
• Onu görünce sevindim. = When I saw him, I got happy.

Here it has a habitual meaning, closer to:

• when I take a short walk
• whenever I take a short walk

not just one single past event.

The subject is understood from context: it is I.

Even though the main clause subject is zihnim (my mind), the person doing yapınca is still the speaker. Turkish often leaves the subject of these adverbial forms unstated when it is clear from context.

So the sentence is understood as:

• No matter how tired I am, when I take a short walk in the evening, my mind clears.

Not:

• when my mind takes a walk...

In natural Turkish, this is completely normal.

Because Turkish can use time words like akşam, sabah, gece, yarın very naturally without a case ending when they function as adverbs of time.

So here:

• akşam = in the evening / in the evenings / in the evening time

It does not need a separate word like in.

Compare:

• Sabah geliyorum. = I’m coming in the morning.
• Akşam çalışıyorum. = I work in the evening.

If you said akşamları, that would sound more explicitly habitual: in the evenings. The bare akşam is simpler and very natural here.

Because yürüyüş yapmak is a common expression meaning to take a walk.

Turkish often uses a noun + a light verb such as yapmak or etmek where English might prefer a single verb. So:

• yürümek = to walk
• yürüyüş yapmak = to take a walk / to go for a walk

In this sentence, kısa bir yürüyüş yapmak suggests a short, complete walking outing, which fits English take a short walk very well.

Also:

• bir here works like English a
• kısa bir yürüyüş = a short walk

You could sometimes say akşam biraz yürüyünce, but kısa bir yürüyüş yapınca sounds very natural and idiomatic.

Because the verb here is effectively açılmak, not açmak.

• açmak = to open something
• açılmak = to open / open up

So:

• zihnim açılıyor literally means my mind is opening up

Idiomatic English would be:

• my mind clears
• I feel mentally refreshed
• I become mentally sharper / more alert

If you said zihnim açıyor, it would sound like my mind opens something, because açmak is transitive. That does not fit the meaning here.

So açılıyor is the correct form.

Yes, açılır could also work, but açılıyor is very natural here.

In Turkish, the present continuous -iyor is often used not only for actions happening right now, but also for regular, repeated experiences. So:

• zihnim açılıyor here means something like my mind clears up whenever this happens

If you used açılır, the sentence would sound a bit more general, timeless, or proverb-like.

Very roughly:

• açılıyor = more vivid, experiential, conversational
• açılır = more general, neutral, rule-like

Both are possible in the right context, but açılıyor sounds very natural in everyday speech.

Yes. That would also be natural.

For example:

• Ne kadar yorgun olsam da, akşam kısa bir yürüyüş yapınca zihnim açılıyor.

This also means No matter how tired I am / Even if I’m very tired...

The difference is mostly one of style and nuance:

• olsam da = very common and straightforward
• olursam olayım = a bit more emphatic, sometimes a little more rhetorical or stylistically marked

Both are correct. A learner is probably more likely to encounter and use olsam da earlier, but it is good to recognize olursam olayım too.

The order can change, although the original order is very natural.

Turkish word order is flexible because suffixes show grammatical relationships clearly. The original sentence puts the concessive idea first:

• Ne kadar yorgun olursam olayım, akşam kısa bir yürüyüş yapınca zihnim açılıyor.

That emphasizes no matter how tired I am.

You could also move parts around for emphasis, for example:

• Akşam kısa bir yürüyüş yapınca, ne kadar yorgun olursam olayım, zihnim açılıyor.

But the original version sounds smoother and more natural in most contexts.

So the order is not completely fixed, but it is chosen for emphasis and flow.