Questions & Answers about Cuando estoy ansioso, mi respiración se acelera.
In Spanish, estar is used for temporary states, conditions, or emotions, while ser is used for more permanent characteristics or identities.
- Estoy ansioso = I am feeling anxious (right now / in this situation).
- Soy ansioso = I am an anxious person (in general, by nature).
In your sentence, the anxiety is treated as a temporary emotional state, so estar is the correct verb:
Cuando estoy ansioso, mi respiración se acelera.
Ansioso/ansiosa must agree with the gender of the speaker:
- A man would say: Estoy ansioso.
- A woman would say: Estoy ansiosa.
So the full sentence changes depending on who’s speaking:
- Male speaker: Cuando estoy ansioso, mi respiración se acelera.
- Female speaker: Cuando estoy ansiosa, mi respiración se acelera.
Everything else in the sentence stays the same.