For swimming underwater,singing we need to make one gasp of breath last long.How do we do that ?
916868
For swimming underwater, you need to condition yourself small steps at a time. First just dunk your head underwater with a stopwatch, see how long you last, then try going longer, at least like 2 seconds, each try, after a while your lungs will get used to it. I did that and after a while I could hold my breath for 2 minutes and 10 seconds underwater, it's not much but it's a lot better than the 45 seconds I could before. For singing, it works differently, although you could reinforce your breath holding by using the technique above. What works for me though, is taking small breaths, like 1/2 seconds breath every once in a while. I learned to do so by watching rappers, they do it from time to time to be able to keep on going. Good luck with that.
478381
Truly what worked for me was to sing along with girls singing (on cd of course) and please do it when nobody is around.  i used to do it in my car, would sing with whatever I could and expanded my range about 4 notes in about 2 months.  (also remember to take zinc... helps the vocal chords repair)
25374
It depends on how you're screaming.  To not lose your voice, you have to scream/project more from your chest.  However, breathing too much air past vocal chords can wear out/damage them as well.  It's a delicate balance, see below for more information.
771831
Breaths come in 10-20 second intervals before dives, which can last anywhere from 5 to 20 minutes, or even longer.
281675
breath deeply 2-5 times
621710
I think you can hold it longer underwater cause you have to for servivial. On land you can just breath through your nose.
91122
Try repeating this:\n\n"Hee-Hee: Ha-Ha: Ha-Ha: Hee-Hee: <SNORT> Ha-Hee: Hee-Ha\n***Deep Breath*** <Snort> Heeeeeeee-Heeeeeeee:Haaa-Haa\n...TiiipppiiiiTaaaayyyttttiiipppiiiiiitooooooo***Deep Breath***\n <Tears> <More Tears> Hee-Hee Haaaaaa-aaawwwaaaa. Sigh"
172090
I do  this Hold your breath and drink water. It kinda hurts going down but it gets rid of them. I also like holding my breath for ten seconds then releasing the breath slowly after that breath in through nose and out the mouth slowly.
412333
lay on your back and hold air in your lungs extending the arms and legs. dont have to hold your breath really. take short breaths out and longer breaths in holding for 2 or 3 seconds
998739
There is two kinds of breath control\n\nstatic and dynamic.. \n\nwhen you just put your face in the water and hold your breath, you are static, to improve your breath control you need to relax everything and bring your HR as low as you can.. my best 3:30 \n\nwhen you are moving, thats when it hurts.. and this is the test of how good your breath control is.. to get better in this it takes a loooot of practice.. my best 100meters ( no fins ).. 125m (w/fins )
654320
use the bottom of your stomache to breath. it sounds weird but it really makes your voice stronger. good luck with american idol! ill vote for u.
603158
Can you sob underwater? No, because you can't inhale. Crying is not much of a crying is you can't sob :P
1031214
Take a few 'Deep Breaths.'
93029
My dad taught me a way that always works. Plug your ears and nose and swallow 5 times without breathing. If you can't swallow 5 times, just do the most you can.
298548
Practice doing your butterfly at a slow pace. It will feel awkward because you are sinking but visualize the position of your body. Visualize your body following your head. Each movement will be exaggerated when swimming slow. Practice this until the motion feels comfortable. Pick up the pace concentrating on your body position. You will notice that as you speed up your body will be in a more comfortable position.\nPractice without breathing, then practice breathing every stroke. The key to the timing is a keeping that small second kick, even when your taking your breath. Practice with fins to get the feeling of your kick.
196284
Take a quick sip of it and that air comes out when you speak.\n\nDon't try to do it a bunch of times in a row though. There's no oxygen in helium so i passed out once trying to do it for too long.
217058
Hyperventilate, by taking 20 full breaths, then 20 all the way in, half way out. After it, you should feel a little lightheaded, but it really helped me a lot during my swimming careered.