Je schneller wir laufen, desto wärmer werden unsere Muskeln.

The faster we run, the warmer our muscles become.

Breakdown of Je schneller wir laufen, desto wärmer werden unsere Muskeln.

• wir: we
• unser: our
• schnell: fast
• warm: warm
• werden: to become
• laufen: to run
• der Muskel: the muscle
• je: the (the more)
• desto: the (the more)

Questions & Answers about Je schneller wir laufen, desto wärmer werden unsere Muskeln.

What does the je…desto construction express, and how is it structured?

The je…desto (or je…umso) construction creates a correlative comparative meaning “the more/faster…, the more/warmer….” It always follows this pattern:
• Je + comparative adjective/adverb + subordinate clause (verb at the end)
• Comma
• Desto + comparative adjective/adverb + main clause (verb in second position)
In your sentence:
• Je schneller wir laufen (the faster we run)
• desto wärmer werden unsere Muskeln (the warmer our muscles get)

How do I form the comparatives schneller and wärmer in German?

Comparatives in German usually take an –er ending:
• schnell → schneller
• warm → wärmer
Monosyllabic adjectives with a single vowel often get an umlaut in the comparative: a → ä, o → ö, u → ü.

Why is the verb laufen at the end of the first clause, but werden in second position in the second clause?

The first clause after je is a subordinate clause, so German word‐order demands the finite verb at the end:
• je … wir laufen
The second clause is a main clause, so it follows the normal verb‐second rule:
• desto wärmer (adjective) werden (verb) unsere Muskeln (subject)

Why is werden used here instead of sein or another verb?

Werden + adjective expresses a change of state (“to become” or “to get”).
• Unsere Muskeln werden wärmer = “Our muscles are becoming/getting warmer.”
Using sein (to be) would simply describe a static state (“Our muscles are warm”), not the process of warming up.

Why is it unsere Muskeln (plural) and what case is it?

• Muskeln is naturally plural here (we talk about all muscles).
• It’s in the nominative plural because unsere Muskeln is the subject of the main clause:
desto wärmer werden unsere Muskeln

Is the comma necessary between the two clauses?

Yes. In German, when you connect a subordinate clause (the je‐clause) with a main clause (the desto‐clause), you must separate them with a comma.

Can I use umso instead of desto?

Absolutely. Umso is interchangeable with desto in this construction:
• Je schneller wir laufen, umso wärmer werden unsere Muskeln.

Can I invert the order of the two clauses?

No. With je…desto constructions, the je‐clause must come first and the desto/umso‐clause second. Swapping them would sound ungrammatical in German.

Do I always need a comparative in both parts of the sentence?

Yes. The idea behind je…desto is to link two comparatives (“more/faster” … “more/warmer”). Omitting one would break the parallelism and the meaning.