اليوم عندي تمرين قصير بالنادي بعد الشغل.

A broad Levantine pronunciation would be:

il-yōm ʿindī tamrīn ʔaṣīr bin-nādi baʿd eš-šeġel

A few helpful notes:

• اليوم → il-yōm or el-yōm
• عندي → ʿindī
• تمرين → tamrīn
• قصير → often ʔaṣīr in many urban Levantine accents, though some speakers may keep q and say qaṣīr
• بالنادي → bin-nādi because the بـ attaches to النادي
• الشغل → often eš-šeġel or similar, depending on region

So the whole sentence sounds smoother than a word-by-word reading.

عندي literally means at me.

In Arabic, especially in everyday speech, possession is often expressed with عند plus a pronoun ending:

• عندي = I have
• عندك = you have
• عنده = he has
• عندها = she has

So instead of a separate verb like English to have, Levantine often uses this structure.

In this sentence:

• عندي تمرين = I have a workout / I’ve got a workout

This is one of the most important everyday patterns in spoken Arabic.

Because in Arabic, adjectives usually come after the noun they describe.

So:

• تمرين قصير = a short workout
• literally: workout short

This is the normal order in both spoken Arabic and Standard Arabic.

Also, the adjective matches the noun in definiteness:

• تمرين قصير = an indefinite noun + an indefinite adjective
• التمرين القصير = the definite noun + the definite adjective

So if you add الـ to the noun, you usually add it to the adjective too.

بالنادي means at the gym or at the club.

It is made of:

• بـ = in / at
• الـ = the
• نادي = club, gym

So:

• ب + النادي → بالنادي

In pronunciation, because ن is a sun letter, the ل of الـ is not really pronounced, so it sounds like:

• bin-nādi or bən-nādi

That assimilation is very normal in Arabic pronunciation.

It can mean both, depending on context.

Literally, نادي is club. But in everyday Levantine, النادي often refers to a sports club or gym, especially when the sentence is about exercise:

• عندي تمرين بالنادي strongly suggests I have a workout at the gym

In modern speech, some people also say:

• الجيم = the gym

But النادي is very natural and common.

الشغل here means work or the job.

So:

• بعد الشغل = after work

This is very common in spoken Levantine.

Difference:

• الشغل = everyday spoken word for work/job
• العمل = more formal, more Standard Arabic, more like written Arabic

So in casual speech, بعد الشغل sounds much more natural than بعد العمل.

Because time expressions are often placed early in Arabic, especially when they set the scene.

So:

• اليوم عندي تمرين قصير بالنادي بعد الشغل means roughly:
• Today, I have a short workout at the gym after work

Putting اليوم first makes today the frame for the whole sentence.

But the word order is flexible. You could also hear:

• عندي اليوم تمرين قصير بالنادي بعد الشغل
• عندي تمرين قصير بالنادي اليوم بعد الشغل

All of these are possible, though they may shift emphasis slightly.

This is about definiteness.

In the sentence:

• اليوم = today
  This word normally appears with الـ in Arabic.
• تمرين قصير = a short workout
  This is indefinite, so there is no الـ
• بالنادي = at the gym / club
  Definite
• الشغل = work
  Also definite in this expression

A useful thing to notice:

• Arabic often uses the definite article in places where English may or may not use the
• بعد الشغل is a set everyday phrase meaning after work
• بالنادي naturally means at the gym/the club

So the presence of الـ does not always match English word-for-word.

It is very natural as spoken Levantine, especially because of:

• عندي for I have
• بالنادي
• بعد الشغل

A more Standard Arabic version might be:

• لديّ تمرين قصير في النادي بعد العمل اليوم

That said, the original sentence is perfectly understandable to Arabic speakers, and much more natural in everyday conversation.

So if you are learning Levantine, this sentence is a good model of normal speech.

Yes, قصير is natural and means short in duration.

So:

• تمرين قصير = a short workout / a brief exercise session

Other adjectives could give slightly different meanings:

• خفيف = light, easy
• سريع = quick
• طويل = long

So:

• تمرين قصير focuses on length of time
• تمرين خفيف focuses more on intensity

In your sentence, قصير works well if the idea is that the workout will not take long.

Yes. Arabic word order is fairly flexible, especially with time and place expressions.

These are all natural or at least understandable:

• اليوم عندي تمرين قصير بالنادي بعد الشغل
• عندي اليوم تمرين قصير بالنادي بعد الشغل
• بعد الشغل عندي تمرين قصير بالنادي اليوم
• عندي تمرين قصير بالنادي بعد الشغل اليوم

The exact emphasis changes a bit:

• putting اليوم first highlights today
• putting بعد الشغل first highlights after work

But the core meaning stays the same.

Because Arabic often leaves out subject pronouns when they are not needed.

In this case, عندي already tells you the meaning is I have:

• ـي = my / me

So أنا is unnecessary unless you want extra emphasis.

Compare:

• عندي تمرين = I have a workout
• أنا عندي تمرين = I have a workout, with a bit more emphasis on I

In normal conversation, leaving out أنا is very common.