Paul Andersen explains how epinephrine is responsible for changes in chemistry of our body associated with the fight or flight response. Epinephrine released by the adrenal medulla are received by a number of organs associated with the...

Ever wondered why you tense up, get pale, and eat too much when stressed? There's a very good evolutionary reason. <b<br/>r/>

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Danger elicits an instinctive biological response. Find out which hormones control whether we run away, or stand our ground and fight. Biology - Being Human - Learning Points. At the first sight of danger, messages are sent to the brain...

Everybody knows what anxiety feels like - it's annoying and counterproductive and apparently useless, so why does it exist? It turns out your anxiety isn't useless at all - it's a result of the sympathetic nervous system (in charge of...

Having trouble sleeping? In this episode of SciShow, Hank explores different kinds of sleep disorders, from insomnia to apnea to sleepwalking.

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Did you know that your body's fight-or-flight response to danger may, in part, come from inside your bones? Plus, another study suggests that vaping may impair to your ability to fight off lung infections.

Did you know that your body's fight-or-flight response to danger may, in part, come from inside your bones? Plus, another study suggests that vaping may impair to your ability to fight off lung infections.

This video explores the concept of fear and its physical and psychological effects on the human body. It discusses how fear is a response that can be triggered by both real and perceived dangers, and how our ancestors' fight or flight...

In this science project, you will learn how breathing techniques can improve your body's stress response to prepare for space flight.

When we experience anxiety, our sympathetic nervous system is activated and initiates the fight-or-flight response. This response is a host of physiological changes that prepare us to either fight or flee. One of the effects of the...

When we experience anxiety, our sympathetic nervous system is activated and initiates the fight-or-flight response. This response is a host of physiological changes that prepare us to either fight or flee. One of the effects of the...

Paul Andersen explains how signal transmission is used to alter both cellular function and gene expression. He uses the example of epinephrine release in humans and how it is used in the fight or flight response. Epinephrine causes...

Exams, the dreaded 5 letter word in every student’s vocabulary. Just the mere mention of it is enough to induce stress; every student’s worst enemy. Hold onto your adrenaline and don’t get stressed for we have got you covered.

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The infamous “serial killer gene” is the monoamine oxidase-A gene, also known as the MAO-A gene or the warrior gene. It codes for an enzyme that metabolizes neurotransmitters such as dopamine, norepinephrine, and serotonin. Dopamine and...

Try Dashlane Premium free for 30 days hereref='https://www.dashlane.com/MinuteEarth.' target='_blank' rel='nofollow'>here And use the coupon code ‘MinuteEarth’ to get 10% off a yearly membership. Humans can hold our breath longer...

Humans can hold our breath longer than we think by taking advantage of our body’s innate survival instincts - and then ignoring them.

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A terrifying experiment tests the fight-or-flight response of unsuspecting passersby. ➡ Subscribehttp://bit.ly/NatGeoSubscribe' target='_blank' rel='nofollow'>Subscribe About Brain Games: Using a series of experiments, illusions and...

A cockroach and jewel wasp are locked in battle. The wasp latches onto the cockroach and inserts her stinger into the cockroach's brain, where her venom blocks its fight-or-flight response. Now, the cockroach is essentially a zombie, and...

This video explains the functions and production of two important hormones in the body: adrenaline and thyroxine. The video provides a clear explanation for how adrenaline is released in times of stress or fear, and how it prepares your...

This problem of antidepressants making you feel worse can happen when we use it for anxiety or depression. With depression, you can feel even more depressed after you take it, but if you keep taking it, that effect...

Even though PTSD is often times associated with soldiers and their experience on the battlefield, research shows that 7.8% of the entire population will suffer from PTSD at sometime in their lives. Children, teens, adults, are all people...

Panic attacks can happen to anyone, but what's actually happening when one strikes? Check out the amazing work by Hollywood, Health & Society='https://hollywoodhealthandsociety.orgDisordert='_blank' rel='nofotwitterociety Resources...

#Fear is an emotion which one feels when one experiences or passes through a dangerous situation or through a situation of perceived threat. It is also considered as a mechanism of the body to protect itself from a dangerous situation or...

When you get excited, you might feel the rush of adrenaline. Why does this chemical make us feel so strong and powerful? Follow Us!href='https://twitter.comvideosoggin' target='_blank' rel='nofollow'>Us!