To bring this dead thread back… one more time… (Sorry. I didn’t see it during either of its first two lives.)
With a little hyperventilational prepping, 2 minutes even. (If I hadn’t been watching a clock, it would have been less, I’m sure.)
54 seconds.
Another one is: How long can you hold a piece of paper on a wall using only your breath blowing on it?
About 4 seconds. (Every time I tried to time it by looking at my watch before starting, I couldn’t even get the paper to stay. I had to resort to just blowing, and then after I was done blowing, count for the approximate length of time I had blown.)


.