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Inhaling and exhaling \\u2013 we all do it. No breath means death. So why restrict it? And how does holding our breath affect our bodies and minds? Some argue holding your breath is a good way to manage stress. But what happens when small children do it unconsciously? Lucy Ash goes in search of her inner dolphin, as she finds out why people hold their breath.

(Image: Athlete breath holding underwater, Credit: Shutterstock)