How long can you hold your breath for?
Use this video for an easy way to time yourself
http://www.youtube.com/watch?v=nM0k-qhM3Es
If you like me and you beat the tape easily, then time yourself with a watch and say what you got
I got 2 mins 30 seconds
First time is always about 1 minute, but the second/third/fourth time I can get over 2 minutes.