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A member asked:
Is it normal to get really lightheaded after holding my breath for a few seconds upon standing. hr increased. i experienced it also during chest xray?
A doctor has provided 1 answer
Absolutely,thoughnot: healthy in most situations, especially to the point of not protecting yourself, falling, being injured. Just the act of standing drops venous return to your heart, thus heart filling/output & BP. Holding you breath, while doing so, further opposes venous return from both upper & especially lower body; accentuating the basic physics issue of compensating for gravity pull on blood in your veins.
Answered 2/13/2016
1.6k views
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