why do you groan when you carry out physically challenging tasks?
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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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