Η ρουτίνα μου αλλάζει τα Σαββατοκύριακα, αλλά οπωσδήποτε θέλω να κοιμάμαι λίγο περισσότερο, γιατί αλλιώς χασμουριέμαι όλη μέρα.

In neutral Greek word order, the possessive μου usually comes after the noun:

• η ρουτίνα μου = my routine
• το σπίτι μου = my house

You can sometimes move μου for emphasis in other structures, but η ρουτίνα μου is the normal, standard way to say it here.

Also notice:

• η ρουτίνα is feminine singular
• μου does not change form for gender or number in this use

So η ρουτίνα μου literally means the routine of mine, but in natural English it is just my routine.

Αλλάζει is the 3rd person singular present form of αλλάζω = to change.

Here the subject is η ρουτίνα μου (my routine), so the verb must be he/she/it changes:

• εγώ αλλάζω = I change
• η ρουτίνα αλλάζει = the routine changes

In this sentence, αλλάζει means something like:

• changes
• is different
• varies

So Η ρουτίνα μου αλλάζει τα Σαββατοκύριακα means that the speaker’s routine is not the same on weekends.

Τα Σαββατοκύριακα means on weekends or at weekends in a general, repeated sense.

A few important points:

1. Σαββατοκύριακο is neuter

   • singular: το Σαββατοκύριακο = the weekend
   • plural: τα Σαββατοκύριακα = the weekends

2. Greek often uses the accusative for time expressions
   So τα Σαββατοκύριακα functions adverbially, meaning on weekends.

Compare:

• Το Σαββατοκύριακο θα δουλέψω. = I will work this weekend
• Τα Σαββατοκύριακα δουλεύω. = I work on weekends

So the plural here shows a habitual meaning: not one specific weekend, but weekends in general.

Οπωσδήποτε means definitely, absolutely, in any case, or no matter what, depending on context.

In this sentence:

• αλλά οπωσδήποτε θέλω...

it adds a strong sense of insistence:

• but I definitely want...
• but I really do want...
• but in any case I want...

It is a common adverb and often sounds slightly stronger or firmer than just σίγουρα (surely/certainly).

This is one of the most important Greek grammar points: aspect.

Greek often distinguishes between:

• imperfective: ongoing, repeated, habitual
• perfective: single, complete event

Here:

• κοιμάμαι = imperfective = to be sleeping / to sleep regularly
• κοιμηθώ = perfective subjunctive form = to fall asleep / to sleep (as one complete event)

So:

• θέλω να κοιμάμαι λίγο περισσότερο means
  I want to sleep a little more in a general, ongoing sense

This fits the context, because the speaker is talking about what they want on weekends as a habit or pattern.

If you said:

• θέλω να κοιμηθώ

that would usually sound more like:

• I want to get some sleep
• I want to fall asleep
• I want to sleep (this one time)

So κοιμάμαι is the natural choice here.

It looks passive, but here it is not actually passive in meaning.

Κοιμάμαι is one of those Greek verbs that has middle/passive-type endings but an active meaning:

• κοιμάμαι = I sleep

This is very common in Greek. Another example is:

• θυμάμαι = I remember

So although κοιμάμαι has the form of a mediopassive verb, it simply means I sleep, not I am slept.

Related verb:

• κοιμίζω = I put someone to sleep

So:

• κοιμάμαι = I sleep
• κοιμίζω το μωρό = I put the baby to sleep

Λίγο περισσότερο means a little more.

Breakdown:

• λίγο = a little
• περισσότερο = more

So together:

• να κοιμάμαι λίγο περισσότερο = to sleep a little more

This is a very common pattern in Greek:

• λίγο καλύτερα = a little better
• λίγο πιο αργά = a little later
• λίγο περισσότερο = a little more

You could also say just περισσότερο, but λίγο περισσότερο sounds more natural when you want to soften it and mean not a huge amount, just somewhat more.

Yes — γιατί can mean both:

• why?
• because

The meaning depends on context.

Here it clearly means because:

• ..., γιατί αλλιώς χασμουριέμαι όλη μέρα.
• ..., because otherwise I yawn all day.

Compare:

• Γιατί άργησες; = Why were you late?
• Άργησα γιατί είχε κίνηση. = I was late because there was traffic.

So Greek uses the same word for both ideas, just as some languages do.

Αλλιώς means otherwise.

So:

• γιατί αλλιώς... = because otherwise...

It introduces the consequence of not doing the previous thing. In this sentence, the idea is:

• I want to sleep a bit more,
• because if I don’t, I yawn all day.

Greek often places αλλιώς early in the clause, where English would also naturally say otherwise.

Examples:

• Πρέπει να φύγουμε τώρα, αλλιώς θα αργήσουμε.
  = We have to leave now, otherwise we’ll be late.

Yes. Χασμουριέμαι means I yawn or I keep yawning.

Like κοιμάμαι, it has a mediopassive-looking form but an active meaning in everyday usage.

In this sentence, because it is in the present tense, it can suggest:

• I yawn
• I keep yawning
• I’m yawning

depending on context.

So:

• χασμουριέμαι όλη μέρα = I yawn all day / I keep yawning all day

This verb is especially common when talking about sleepiness or boredom.

Both are possible.

• όλη μέρα
• όλη τη μέρα

Both mean all day.

The version όλη μέρα is very common in everyday speech and sounds a bit more compact.
The version όλη τη μέρα is also completely normal and may sound slightly fuller or more explicit.

You will hear similar pairs in Greek:

• όλη νύχτα / όλη τη νύχτα = all night
• όλο χρόνο / όλο τον χρόνο = all year

So in this sentence, όλη μέρα is a natural adverbial time expression.

Greek present tense is often used for:

• general truths
• habits
• repeated actions
• current states

This sentence describes a regular pattern, not one single event:

• Η ρουτίνα μου αλλάζει τα Σαββατοκύριακα = my routine changes on weekends
• θέλω να κοιμάμαι λίγο περισσότερο = I want to sleep a little more
• χασμουριέμαι όλη μέρα = I yawn all day

So the present tense is exactly what Greek would normally use here, just as English also uses present forms in similar habitual statements.

The word order is natural, but Greek is more flexible than English.

The sentence is:

• Η ρουτίνα μου αλλάζει τα Σαββατοκύριακα, αλλά οπωσδήποτε θέλω να κοιμάμαι λίγο περισσότερο, γιατί αλλιώς χασμουριέμαι όλη μέρα.

This order sounds natural because it moves from:

1. the general situation
2. to the speaker’s wish
3. to the reason

Greek word order often changes for emphasis, but this version is neutral and easy to follow.

For example, you could move οπωσδήποτε around slightly:

• αλλά θέλω οπωσδήποτε να κοιμάμαι λίγο περισσότερο

This is also natural, with a slightly different emphasis. Greek allows that kind of flexibility more than English does.