As I understand it, you only breathe once a minute. Is this true?

6 seconds sound clip from the 2001: A Space Odyssey (1968) movie soundboard.

You can hear this line at 01:00:42 in the Blu-ray version of the movie.

Quote context

[...]

- Why was this done?

- This was done in order to achieve the maximum conservation of our life-support capabilities, basically food and air.

- Now, the three hibernating crew members represent the survey team.

- Their efforts won't be utilized until we approach Jupiter.

- What's it like while you're in hibernation?

- Well, it's exactly like being asleep. You have absolutely no sense of time The only difference is that you don't dream.

- As I understand it, you only breathe once a minute. Is this true?

- That's right, and the heart beats three times a minute.

- Body temperature is usually down to about three degrees centigrade.

- The sixth member of the Discovery crew was not concerned about the problems of hibernation for he was the latest result in machine intelligence.

- The HAL 9000 computer, which can reproduce though some experts prefer to use the word mimic, most of the activities of the human brain and with incalculably greater speed and reliability.

[...]