Passages 1 - Unit 4

Early birds = early bird (Madrugador)
Night owls = Noctambulos (Nocturnos)
Boldfaced = negrita

noctámbulo, -la adj.

1   Que desarrolla su actividad principal durante la noche: el mochuelo y la lechuza son aves noctámbulas.

— adj./s. m. y f.

2   Se aplica a la persona que tiene tendencia a realizar actividades durante la noche, especialmente si son diversiones.

In a reduced time clause, the subject of the clause is omitted and the verb is changed to
an -ing form. A time clause with before, after, or while can be reduced only if the
subject in the sentence's other clause is the same.

Before I go to sleep, I like to read.

Before going to sleep, I like to read.
I like to read before going to sleep.
Before the baby goes to sleep, his mother reads to him.

Phrasal verb

Verbos Compuestos-Inglés, Phrasal Verbs, TURN 

Vocabulary - though, although, even though, despite, in spite of