Перед сном стоит проветрить спальню, чтобы легче засыпать.

Before going to sleep, it’s worth airing out the bedroom so that it’s easier to fall asleep.

Breakdown of Перед сном стоит проветрить спальню, чтобы легче засыпать.

• перед: before
• чтобы: so that
• спальня: the bedroom
• сон: the sleep
• засыпать: to fall asleep
• легче: easier
• стоить: to be worth
• проветрить: to air out

Questions & Answers about Перед сном стоит проветрить спальню, чтобы легче засыпать.

Why is it перед сном and not перед сон / перед сна? What case is сном?

Перед (like под, над, между) normally requires the instrumental case to mean “before/in front of” in space or time.
So сон → instrumental singular сном: перед сном = “before sleep / before going to bed.”
Other common time phrases with перед + instrumental: перед работой, перед уроком, перед встречей.

Does перед сном mean “before sleeping” or “before going to bed”?

In everyday Russian it usually means “before going to bed / at bedtime.” Literally it’s “before sleep”, and context often implies the bedtime routine.

What does стоит + infinitive mean here? Who is doing the action?

Стоит + infinitive is an impersonal recommendation meaning “it’s worth … / one should … / it’s a good idea to …”
No explicit subject is needed; it’s a general statement. In English you often supply you: “Before bed, you should air out the bedroom …” but Russian leaves it generic.

Is стоит literally “stands”? Why is it used this way?

Yes, стоить originally relates to “cost / be worth.” In this construction стоит + infinitive means “it is worth doing” (not physical standing).
Compare:

• Это стоит денег. = “It costs money.”
• Стоит попробовать. = “It’s worth trying.”

Why is проветрить used (perfective) and not проветривать (imperfective)?

Проветрить is perfective, focusing on the completed result: air the room out (once, successfully).
That fits a bedtime routine: do it, finish, then go to sleep.
Проветривать (imperfective) would suggest a repeated/habitual or process focus, e.g. Перед сном я проветриваю спальню = “Before bed I (habitually) air out the bedroom.”

Why is спальню in this form? What case is it?

Спальню is accusative singular because it’s the direct object of проветрить (to air out what?).
Nominative: спальня → Accusative: спальню.

What does проветрить literally mean, and how is it formed?

Проветрить means “to air out / ventilate” (let fresh air in). It’s built from:

• root related to ветер (wind)
• prefix про- (often implying “through” / achieving a result)
  Imperfective pair: проветривать.

Why is there a comma before чтобы?

Because чтобы introduces a purpose clause (“in order to …”), which is a subordinate clause. In Russian, subordinate clauses are typically separated by a comma:
… , чтобы + …

Why is it чтобы легче засыпать and not something like чтобы засыпать легче? Does word order matter?

Both are possible; word order is flexible and changes emphasis.

• чтобы легче засыпать puts the focus on легче (more easily) right away.
• чтобы засыпать легче highlights the action first (to fall asleep), then adds more easily.

What exactly is легче grammatically?

Легче is the comparative form of легко (easily). It functions as an adverb here: “to fall asleep more easily.”
It doesn’t require “than what” to be stated; it can mean “more easily (than usual / than otherwise).”

Why is засыпать (imperfective) used and not заснуть (perfective)?

With чтобы + infinitive, Russian often uses the imperfective to express a general goal/process: чтобы легче засыпать = “so that falling asleep is easier (in general).”
A very common alternative is чтобы было легче заснуть (perfective заснуть), which emphasizes a single successful result: “so it’s easier to fall asleep (this time).”
Both are natural; the given sentence sounds like general advice.

Could this sentence include вам/тебе? Would it change the meaning?

Yes. Adding a dative pronoun makes the recommendation more directly addressed:

• Перед сном вам стоит проветрить спальню… (polite/plural “you”)
• Перед сном тебе стоит проветрить спальню… (informal “you”)
  Meaning stays basically the same; it becomes less general and more personal.