In Physical Therapy today,

...I did some "sit-to-stand"s: 20 in 2 minutes (THAT'S an average of 1 every 6 seconds.) then, 25 in 90 seconds (THAT'S an average of 1 every 3.6 seconds.) then, 22 in 90 seconds (THAT'S an average of 1 every ~4.09 seconds.) (THIS is how I think--quantitatively.)