Why does your heart rate increase when you're nervous or uncomfortable?

I don%26#039;t need anything too elaborate, but some science would be good. I don%26#039;t mind lots of science terms so you don%26#039;t need to dumb it down for me lol Thanks

Why does your heart rate increase when you%26#039;re nervous or uncomfortable?

You pump more blood to bring more oxygen to every part of your body so you can be ready to fight or flee. It%26#039;s an internal survival mechanism.

(Fight or flight response.)

Why does your heart rate increase when you%26#039;re nervous or uncomfortable?

Your body has built in defenses. When you feel nervous your body secretes adrenaline. Adrenaline causes your heart to speed up so your blood will pump faster. This sends blood out to your brain and limbs so you can fight or prepare to flee. It%26#039;s called the fight or flight syndrome. It%26#039;s actually pretty cool. Without this defense most of us wouldn%26#039;t survive too long. When danger comes along, if we didn%26#039;t have a burst of adrenaline we would not have the extra power to run or think of a way to defend ourselves.

Why does your heart rate increase when you%26#039;re nervous or uncomfortable?

hmm i hope this isn%26#039;t a homework question... but anyways in science terms, the parasympathetic nervous system releases endorphins (fight or flight syndrome) that allow for the body to prepare to ATTACK

in lamens terms: your body does not know what you are about to go through and wants to be as prepared as possible for whatever lies ahead, this means as much blood flow as possible(which carries oxygen)

Why does your heart rate increase when you%26#039;re nervous or uncomfortable?

Adrenaline mate. It%26#039;s the fight or flight mechanism we%26#039;ve had since caveman days. Blimy-gotta go there%26#039;s a gator coming this way.

Why does your heart rate increase when you%26#039;re nervous or uncomfortable?

The fight or flight syndrome is what your body does in a state of arousal such as this. To say it better; the body is getting ready for running away or staying and fighting its way forward.

you have three nervous systems; autonomic, parasympathetic, and the central nervous system. These cause a certain amount of hormones from glands to enter the bloodstream for the above conditions. We do even more of this in times of everyday stress. Volunteer Counselor Western Illinois University