Great, now retry that feat moving around. Moving will use up your oxygen faster. The guy in the clip wasn't sitting still behind a computer, now was he?
To be honest with you I've spent a lot of time in pools and have been a kayaker for nearly 2 decades now. Pretty much grew up in the water like he did. When I was around 9 years old I would dive down to the deep end of an Olympic sized swimming pool at UALR and hold my breath even longer than this. The record is 22:22 by hyperventilating 100% pure oxygen and 11:35 using the normal method. To me it was like watching someone run a mile non stop. All it takes is training so it isn't exactly amazing. But if you noticed, I didn't neg the upload. It made me feel a bit more cultured. :)