Forced deep breathing for a few minutes by a person sitting at rest may be followed by a temporary cessation of breathing. This is due to

Forced deep breathing for a few minutes by a person sitting at rest may be followed by a temporary cessation of breathing. This is due to
1). Too much oxygen in blood
2). Too much carbon dioxide in blood
3). Both, too much oxygen and very little carbon dioxide in blood
4). Little carbon dioxide in blood

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