20 Minute Contact with Nature Reduces Stress Hormone Cortisol






The data revealed that just a twenty-minute nature experience was enough to significantly reduce cortisol levels. But if you spent a little more time immersed in a nature experience, 20 to 30 minutes sitting or walking, cortisol levels dropped at their greatest rate. After that, additional de-stressing benefits continue to add up but at a slower rate. The image is in the public domain.

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Los abrazos activan la química cerebral del bienestar, la calma y la alegría, a corto y largo plazo

Los niños “tocan base” cuando están corriendo alegremente y, de repente, se sientan en el regazo de mamá o de papá, se apoyan en ellos o buscan algún tipo de contacto. Esta actitud puede durar segundos, o apenas unos minutos. Enseguida vuelven a sus juegos. Esto se llama “reabastecimiento emocional” y sirve para crear un precioso equilibrio químico en sus cerebros. Si tu hija o hijo se comporta así contigo, te hace un gran cumplido: te considera una fuente natural de opioides cerebrales.

Tanto nuestro cuerpo como nuestro cerebro secretan hormonas, poderosas sustancias químicas que nos pueden hacer sentir muy bien o muy mal. Normalmente, pensamos en las hormonas solo en relación con nuestra sexualidad, pero existen muchos tipos que nos afectan de muchas maneras en nuestros sentimientos, percepciones y comportamientos.
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2,000 Atoms Exist in Two Places at Once in Unprecedented Quantum Experiment

The new experiment demonstrated a bizarre quantum effect from the double-slit experiment at an unprecedented scale.

Giant molecules can be in two places at once, thanks to quantum physics.

That’s something that scientists have long known is theoretically true based on a few facts: Every particle or group of particles in the universe is also a wave — even large particles, even bacteria, even human beings, even planets and stars. And waves occupy multiple places in space at once. So any chunk of matter can also occupy two places at once. Physicists call this phenomenon “quantum superposition,” and for decades, they have demonstrated it using small particles.

But in recent years, physicists have scaled up their experiments, demonstrating quantum superposition using larger and larger particles. Now, in a paper published Sept. 23 in the journal Nature Physics, an international team of researchers has caused molecule made up of up to 2,000 atoms to occupy two places at the same time.

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Dancing can reverse the signs of aging in the brain







As we grow older we suffer a decline in mental and physical fitness, which can be made worse by conditions like Alzheimer’s disease. A new study, published in the open-access journal Frontiers in Human Neuroscience, shows that older people who routinely partake in physical exercise can reverse the signs of aging in the brain, and dancing has the most profound effect.

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“Brasil enfrenta epidemia de demência”, afirma pesquisadora






Um estudo realizado por pesquisadores da Faculdade de Medicina (FM) da USP indica que uma parcela significativa dos casos de demência diagnosticados no Brasil poderia ser evitada com o controle de doenças crônicas como hipertensão e obesidade. O que chamou a atenção dos pesquisadores foi que a proporção de demência do tipo vascular é maior no Brasil do que em outros países. O Jornal da USP no Ar conversou sobre esse assunto com a professora Cláudia Kimie Suemoto, da Disciplina de Geriatria e pesquisadora do Biobanco para Estudos em Envelhecimento da FMUSP. Ela também colabora com o Estudo Longitudinal da Saúde do Adulto (ELSA-Brasil).

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Don’t make major decisions on an empty stomach

We all know that food shopping when hungry is a bad idea but new research from the University of Dundee suggests that people might want to avoid making any important decisions about the future on an empty stomach.

The study, carried out by Dr Benjamin Vincent from the University’s Psychology department, found that hunger significantly altered people’s decision-making, making them impatient and more likely to settle for a small reward that arrives sooner than a larger one promised at a later date.

Participants in an experiment designed by Dr Vincent were asked questions relating to food, money and other rewards when satiated and again when they had skipped a meal.

While it was perhaps unsurprising that hungry people were more likely to settle for smaller food incentives that arrived sooner, the researchers found that being hungry actually changes preferences for rewards entirely unrelated to food.

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