Eli5 why the heart needs a few minutes to return back to the normal rhythm after beating fast, as opposed to just reverting back to normal instantly
In: 4
Fast heart beat is a result, rather than a precursor to ‘high heart rate activities (let’s say exercise).
Exercise (if aerobic) will begin to decrease cell glucose and O2 levels > replacing them with CO2 and energy. Your lungs/brain will subconsciously counteract this by upping rate/depth of breath and heart rate. It’ll keep at this higher rate until blood levels are stabilized.
Regards this is only for aerobic respiration, I don’t know enough about anaerobic to comment.
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