Myth Busters #51

I Need To Take In As Deep a Breath As Possible So I Can Swim Further

When holding your breath for long periods of time it is a build up of carbon dioxide in your body that forces you to take a breath and not so much a lack of oxygen, carbon dioxide is a toxin and your body wants to get it out of your system as fast as possible. By holding your breath, you are trapping the carbon dioxide in your body, once levels of carbon dioxide start to head towards unsafe levels your bodies natural mechanisms force you to exhale it out (Pretty sure the girls in the picture must have had a lot to exhale).   Therefore when performing activities such as swimming it is a good idea to remember to exhale even while under water to try and get rid of as much of the carbon dioxide in your body as possible, this helps to increase the efficiency of your breathing as well as your swimming.

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