Ok here ya go. On this particular day the ones who finished first did it in 1:29. The best I've had anyone do it in is 1:07 and some were routinely doing it in 1:12- 1:20. I've only had a few do two of these in a row. The last guy in the back did 2 in a row and he is one of the ones who was ultimately knocking this out in 1:15-1:20. Keep in mind I had them do these AFTER doing 4-5 circuits of 12 stations with 30 sec on 15 off and about 1-2 minutes in between circuits.
http://www.youtube.com/watch?v=SZU2GR6SMvU