Answer:
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate.
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<em>Hope</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>you</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em></h2>
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-This research attempts to show that exercising keeps you fit and helps you avoid a number of disorders, and eating well helps you avoid a variety of harmful diseases by providing you with an extra boost of energy with the right meal.
is this alright please inform me
Changes in the force of contraction of the heart
Pros: teamwork, doing something you enjoy, spending time with friends cons: staring at a screen, bad posture, might be on it for to long
