The ability to hold your breath for a long period of time is a much sought-after skill. Maybe you want to last longer underwater while diving or surfing, or maybe you're just looking for an impressive party trick. Whatever the reason, it is actually a very helpful thing in the longrun.
It increases the lung capacity which in turn improves the rate of oxidation-reduction in the blood capillaries. It also helps in improving metabolism. Many people advice new learners of swimming to practice this art of holding breath under water before trying to learn to swim.
Most untrained people can comfortably hold their breath for 30 seconds before gasping.With proper training that capacity increases. I often find local swimmers holding their breath for about 2-3 minutes. Harry Houdini was renowned for his ability to hold his breath for three and a half minutes in the early 20th century. Five years ago, his fellow illusionist David Blaine broke the world record for breath-holding with a total of 17 minutes and 4 seconds. Even that record has since been broken several times, and now stands at over 22 minutes, a sixfold improvement in a century.
So as you can see although holding breath under water may seem a tough thing to do, but with proper training one can get the hang of it. And that person will be awarded with a even healthier life.
Bubblews Link ->
http://www.bubblews.com/news/6637429-how-long-can-you-hold-your-breath-under-water