from the world's big
How evolution made our brains lazy
Blame our ancestors for why it's easier to be a couch potato.
- A new study shows that the brain prefers to expend as little energy as possible.
- Putting forth less effort had advantages for our ancestors.
- Being inactive is not beneficial in modern life and needs addressing.
Why is it often so hard to get off the couch and go to the gym? While you can certainly point to your lack of will power for the inaction, you can also blame evolution for this predicament. Your brain prefers to minimize effort because that's how it's been trained to do it for millennia.
Scientists from the University of Geneva (UNIGE) and the University Hospitals of Geneva (HUG) in Switzerland came to this conclusion after studying the neuron activity of people who had the choice of either engaging in physical activity or doing nothing. The researchers found that it takes much more effort for the brain to escape its general tendency to put forth less effort.
This battle in the mind comes courtesy of our ancestors who aimed to do less to increase the likelihood they would survive. Expending unnecessary energy would have made them more vulnerable to predators or environmental factors. Conserving energy was helpful when competing against rivals, fighting, hunting for prey, and searching for food. Living in modern societies does not require this approach, and yet the predilection of our brains to work less persists.
To gain a better understanding, the scientists based their hypothesis on "the physical activity paradox." You've experienced it if you've ever done something like buying a membership to a gym that you attend with less frequency each passing week. This happens when the conflict between your reason-based knowledge (going to the gym is good for my health) runs into the automatic system based on affect, which is, in this case, all the hurt and tiredness you expect to get out of the physical activity. The result is often paralysis—you remain sedentary.
To delve deeper into what is taking place at the neuronal level, the researchers studied the brain activity of 29 people who desired to be more active in their everyday lives but had a hard time doing so. The subjects were made to choose between physical activity or inactivity as the researchers observed their brains using an electroencephalograph (EEG) with 64 electrodes.
The research team was headed by Boris Cheval from the Faculty of Medicine at UNIGE and HUG and Matthieu Boisgontier from Leuven University, Belgium, and the University of British Columbia, Canada.
Cheval explained how the experiment, where subjects controlled an online avatar, was carried out:
We made participants play the "manikin task," which involved steering a dummy towards images representing a physical activity and subsequently moving it away from images portraying sedentary behaviour [...] They were then asked to perform the reverse action.
The scientists looked at how long it took the participants to get near the sedentary image versus avoiding it and found that it took the subjects 32 milliseconds less to move away from the less active image. Cheval called this result "considerable for a task like this." While such an outcome didn't correspond to their theory of the physical activity paradox at first glance, it actually ended up confirming it.
This animation shows the experiment the participants were asked to perform, moving the avatar closer or farther from the image shown.
Credit: UBC Media Relations
It turned out that the reason for why the participants moved their avatar away from images of physical inactivity and towards active pictures more quickly is because avoiding lazy images forced their brains to work harder. That's due to the fact that the participants wanted to engage in physical activity even if they weren't doing so. Choosing more active images was actually easier to do. As such, the EEG scans suggested that their brains were essentially hardwired towards laziness.
Matthieu Boisgontier explained why evolution preferred the easy way out:
Conserving energy has been essential for humans' survival, as it allowed us to be more efficient in searching for food and shelter, competing for sexual partners, and avoiding predators. [...] The failure of public policies to counteract the pandemic of physical inactivity may be due to brain processes that have been developed and reinforced across evolution.
He thinks one big takeaway from the study is that the brain has to work hard to avoid physical activity. The team's research will next focus on whether the brain can be re-trained.
Check out the new study, published in the journal Neuropsychologia, here.
Join multiple Tony and Emmy Award-winning actress Judith Light live on Big Think at 2 pm ET on Monday.
Construction of the $500 billion dollar tech city-state of the future is moving ahead.
- The futuristic megacity Neom is being built in Saudi Arabia.
- The city will be fully automated, leading in health, education and quality of life.
- It will feature an artificial moon, cloud seeding, robotic gladiators and flying taxis.
The Red Sea area where Neom will be built:
Saudi Arabia Plans Futuristic City, "Neom" (Full Promotional Video)<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="c646d528d230c1bf66c75422bc4ccf6f"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/N53DzL3_BHA?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span>
Frequent shopping for single items adds to our carbon footprint.
- A new study shows e-commerce sites like Amazon leave larger greenhouse gas footprints than retail stores.
- Ordering online from retail stores has an even smaller footprint than going to the store yourself.
- Greening efforts by major e-commerce sites won't curb wasteful consumer habits. Consolidating online orders can make a difference.
A pile of recycled cardboard sits on the ground at Recology's Recycle Central on January 4, 2018 in San Francisco, California.
Photo by Justin Sullivan/Getty Images<p>A large part of the reason is speed. In a competitive market, pure players use the equation, <em>speed + convenience</em>, to drive adoption. This is especially relevant to the "last mile" GHG footprint: the distance between the distribution center and the consumer.</p><p>Interestingly, the smallest GHG footprint occurs when you order directly from a physical store—even smaller than going there yourself. Pure players, such as Amazon, are the greatest offenders. Variables like geographic location matter; the team looked at shopping in the UK, the US, China, and the Netherlands. </p><p>Sadegh Shahmohammadi, a PhD student at the Netherlands' Radboud University and corresponding author of the paper, <a href="https://www.cnn.com/2020/02/26/tech/greenhouse-gas-emissions-retail/index.html" target="_blank">says</a> the above "pattern holds true in countries where people mostly drive. It really depends on the country and consumer behavior there."</p><p>The researchers write that this year-and-a-half long study pushes back on previous research that claims online shopping to be better in terms of GHG footprints.</p><p style="margin-left: 20px;">"They have, however, compared the GHG emissions per shopping event and did not consider the link between the retail channels and the basket size, which leads to a different conclusion than that of the current study."</p><p>Online retail is where convenience trumps environment: people tend to order one item at a time when shopping on pure player sites, whereas they stock up on multiple items when visiting a store. Consumers will sometimes order a number of separate items over the course of a week rather than making one trip to purchase everything they need. </p><p>While greening efforts by online retailers are important, until a shift in consumer attitude changes, the current carbon footprint will be a hard obstacle to overcome. Amazon is trying to have it both ways—carbon-free and convenience addicted—and the math isn't adding up. If you need to order things, do it online, but try to consolidate your purchases as much as possible.</p><p>--</p><p><em>Stay in touch with Derek on <a href="http://www.twitter.com/derekberes" target="_blank">Twitter</a>, <a href="https://www.facebook.com/DerekBeresdotcom" target="_blank">Facebook</a> and <a href="https://derekberes.substack.com/" target="_blank">Substack</a>. His next book is</em> "<em>Hero's Dose: The Case For Psychedelics in Ritual and Therapy."</em></p>
Chronic irregular sleep in children was associated with psychotic experiences in adolescence, according to a recent study out of the University of Birmingham's School of Psychology.