Langsame Dehnungen verbessern meine Ausdauer, ohne dass ich mich überanstrenge.

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Breakdown of Langsame Dehnungen verbessern meine Ausdauer, ohne dass ich mich überanstrenge.

• langsam: slow
• mein: my; (masculine or neuter, nominative)
• mich: myself

Questions & Answers about Langsame Dehnungen verbessern meine Ausdauer, ohne dass ich mich überanstrenge.

Why is it langsame Dehnungen and not langsam Dehnungen?

Langsam is an adjective describing Dehnungen (stretching exercises).

In German, attributive adjectives (adjectives placed directly in front of a noun) need an ending that shows number, case, and gender.

• Dehnungen is:
  • plural
  • nominative (subject of the sentence)
  • with no article in front (there’s no die or meine before it)

For plural nominative with no article, the adjective ending is -e.

So:

• langsame Dehnungen = correct
• langsam Dehnungen = wrong in this position

If you put the adjective after the verb, it would stay in its basic form:

• Die Dehnungen sind langsam. (The stretches are slow.)

Why is Dehnungen plural here? Could I say Langsame Dehnung verbessert meine Ausdauer?

You could say Langsame Dehnung verbessert meine Ausdauer, but it sounds odd, because Dehnung in the sense of stretching exercises is very often used in the plural.

Native speakers usually think of stretching as a set or series of individual stretches:

• Langsame Dehnungen verbessern meine Ausdauer.
  Slow stretching exercises improve my endurance.

Using the plural:

• sounds more natural
• fits with the idea of a training routine with multiple stretches

The singular die Dehnung is more like “a stretch” (one specific stretching movement) or “stretching (as a concept)” in some contexts, but for workout talk, the plural is far more common.