What is stress? | Processing the Environment | MCAT | Khan Academy

Created by Ryan Scott Patton.Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/processing-the-environment/stress/v/stressors?utm_source=YT&utm_medium=Desc&utm_campaign=mcat Missed the previous lesson? https://www.khanacademy.org/test-prep/mcat/processing-the-environment/emotion/v/theories-of-emotion?utm_source=YT&utm_medium=Desc&utm_campaign=mcatMCAT on Khan Academy: Go ahead and practice some passage-based questions!About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We’ve also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.For free. For everyone. Forever. #YouCanLearnAnythingSubscribe to Khan Academy’s MCAT channel: https://www.youtube.com/channel/UCDkK5wqSuwDlJ3_nl3rgdiQ?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy

How Chronic Stress Harms Your Body

We can’t avoid having stress, and that’s not always a bad thing. But if you are dealing with a lot of stress every day, it might cause you physical harm.Hosted by: Hank Green ———- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ———- Dooblydoo thanks go to the following Patreon supporters: Kelly Landrum Jones, Sam Lutfi, Kevin Knupp, Nicholas Smith, Inerri, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Bella Nash, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick Merrithew, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz ———- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ———- Sourceshttp://www.apa.org/helpcenter/understanding-chronic-stress.aspx http://sites.google.com/site/sarahpressman2/millerchenzhou2007.pdf https://www.ncbi.nlm.nih.gov/pubmed/15574496 http://www.nature.com/nature/journal/v490/n7419/full/490169a.html https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3401586/ https://www.ncbi.nlm.nih.gov/pubmed/18279846 https://www.ncbi.nlm.nih.gov/pubmed/9625226 https://www.ncbi.nlm.nih.gov/pubmed/1674771 http://www.sciencedirect.com/science/article/pii/014067369193068K https://www.ncbi.nlm.nih.gov/pubmed/10681901 https://www.ncbi.nlm.nih.gov/pubmed/17201569 http://library.allanschore.com/docs/MaltreatmentHPAGunnar06.pdf https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2853611/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4464969/ http://psycnet.apa.org/record/1993-44556-001 https://www.ncbi.nlm.nih.gov/pubmed/20604855 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3780662/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3374921/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3052954/ https://www.ncbi.nlm.nih.gov/pubmed/18190880Image Sources: https://commons.wikimedia.org/wiki/Category:Cortisol#/media/File:Cortisol-2D-skeletal.png https://commons.wikimedia.org/wiki/Epinephrine#/media/File:Epinephrine.png

How stress affects your brain – Madhumita Murgia

Check out our Patreon page: https://www.patreon.com/tededView full lesson: http://ed.ted.com/lessons/how-stress-affects-your-brain-madhumita-murgiaStress isn’t always a bad thing; it can be handy for a burst of extra energy and focus, like when you’re playing a competitive sport or have to speak in public. But when it’s continuous, it actually begins to change your brain. Madhumita Murgia shows how chronic stress can affect brain size, its structure, and how it functions, right down to the level of your genes.Lesson by Madhumita Murgia, animation by Andrew Zimbelman.