Read the following premise and pick the correct choice. Then, respond with which of the choices is correct.
Premise: I ran out of breath.

Choice 1: I climbed several flights of stairs.
Choice 2: I read several chapters of the book.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1. The premise suggests that the person was unable to breathe properly, which is a common symptom of physical exertion, such as