why do you groan when you carry out physically challenging tasks?
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when you flex your muscles intently for a task, you may indeed squeeze the air out of yourself while your throat is configured in a neutral state that would construct a glottal stop when given breath.
and so, you wince “hnng” as this is the sound of an aspirated glottal stop.
Try and lift a very heavy thing whilst staying quiet and then try and lift it and groan a bit. You’ll find groaning makes it easier to handle the load. It’s psychological.
When we lift heavy things or over exert ourselves, we instinctively take a deep breath before we perform that task. This is because when we take a deep breath, we use the air as bracing while we bear down while doing the task. This act of bearing down is called the Valsalva Maneuver and it allows us to push ourselves a bit harder than we usually can.
Groaning is a byproduct of the release of this breath caused by us pushing ourselves to complete the task while simultaneously trying to hold that breath. If you can hold your breath and not groan, you’ll maintain more force through a lift (as an example) than you will if you allow the air to escape by groaning.
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