system
Given the following post, respond as if you're commenting on Reddit:
human
If I'm trapped underwater, and I find a bottle of air, what is the most efficient way to breathe it?

Short breaths? Full breaths?
gpt
Diver here.

The amount of air in an uncompressed bottle won't be enough to make  the effort worthwhile. You would be better off taking the time and energy to get to either the surface or a reliable air source like a partner's backup regulator. 

For short vs long, either one would deplete in a matter of 1 breath anyway.