Learn Romanian: De obicei, mă trezesc devreme.

Adverbs of frequency like de obicei (usually) are very flexible. Putting them at the start of the sentence is a common way to set the context or emphasize the routine. You could also put it right after the verb, like Mă trezesc de obicei devreme, which is also completely correct!

What does obicei mean on its own?

By itself, obicei means "habit", "custom", or "tradition". So de obicei literally translates to "of habit", which is how Romanians say "usually". It is always written as two separate words.

Why do we need the word mă before the verb?

In Romanian, the verb for waking up (a se trezi) is reflexive. This means the action reflects back onto the subject. You aren't just waking up; you are literally saying "I wake myself". The word mă is the "myself" in this sentence.

Does devreme change its ending depending on who is waking up?

No, devreme is an adverb meaning "early", and adverbs in Romanian never change their form. Whether it is "I wake up early" or "they wake up early", it will always stay exactly as devreme.