I was going through Youtube videos and found this interactive video where basically you hold your breath as long as you can to try and beat the cameraman.
Needless to say, if you do try it, don't be stupid. If you are in need of breath and are about to pass out, then breathe! Don't try to be a hero.
Interactive challengeI managed to beat him and kept going for about 5 more seconds before I got bored.
Thought it would be interesting to share. It is something that's a little bit different. Just remember to not go and try and be a wise guy and think about setting a new world record.
Cheers for looking
(I hope this is alright to post)