Why is it that I almost faint if I try to shit really hsrd?

  • @amio@lemmy.world
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    51 year ago

    Vagal tone, is the technical answer. A nerve (vagus) runs through your body and, among other things, slows the heart. When straining to “void”, you cause that nerve to activate more strongly. It’s also related to the Valsalva maneuver.