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The Science of Why You Shouldn't Eat at Your Desk

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Where do you usually eat your lunch? If you work in an office, chances are you eat at your desk, slogging through your workload while trying not to get too much salad dressing on your keyboard in the process. Just one in five of us actually take any lunch break at all, and research suggests all this desk time is hurting our health and lowering our productivity.

“Staying inside, in the same location, is really detrimental to creative thinking,” Kimberly Elsbach, a professor at the University of California, Davis Graduate School of Management told NPR. “It's also detrimental to doing that rumination that's needed for ideas to percolate and gestate and allow a person to arrive at an 'aha' moment.”

A recent study put this anecdotal hypothesis to the test, asking participants to go for a 30-minute midday walk three times a week over a span of 10 weeks. The researchers equipped participants with a smartphone app that recorded their mood level, workload, tiredness, and motivation before and immediately after the walks. The results? The lunchtime strolls lowered employees’ stress levels and made them feel more enthusiastic about their work. A follow-up study showed these breaks also made participants feel more confident about their performance at work.

“Walking therefore seems to have both energizing and relaxing properties in the workplace,” says Cecilie Thøgersen-Ntoumani of Curtin University, who led the study.

So what’s going on here? What’s the secret of the lunchtime stroll? It turns out that just putting some space between you and your workload has a restorative effect on your brain. Previous studies have shown that employees who regularly take breaks during the workday are actually more productive than their workaholic counterparts. And physical exercise, even just a leisurely stroll around the block, tells the brain to produce stress-fighting chemicals called endorphins, which could help explain why walking made this study’s participants feel more relaxed.

Being outside enjoying nature comes with its own brain benefits. A dose of sunshine jumpstarts the production of serotonin, a neurotransmitter believed to be connected to mood and happiness. And green spaces like parks have a calming effect on our mental activity, moving us into a kind of meditative state which, researchers say, “is likely to have a restorative effect and help with attention fatigue and stress recovery.”

"We know that creativity and innovation happen when people change their environment, and especially when they expose themselves to a nature-like environment, to a natural environment," Elsbach says.

If you really can’t get out of the office, invest in a desk plant, which can serve as a mood-lifting substitute for actual outdoor foliage. And you don’t have to be outside to reap the productivity benefits of a lunchtime stroll, as research finds even walking around indoors can boost creativity some 60%. So the next time you’re feeling depleted, the least you can do is take a stroll down to accounting or tackle a few flights of stairs, and say no to the sad desk lunch. Your boss and your body will thank you.

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Belly Flop Physics 101: The Science Behind the Sting
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Belly flops are the least-dignified—yet most painful—way of making a serious splash at the pool. Rarely do they result in serious physical injury, but if you’re wondering why an elegant swan dive feels better for your body than falling stomach-first into the water, you can learn the laws of physics that turn your soft torso a tender pink by watching the SciShow’s video below.

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What's the Saltiest Water in the World?
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Saltwater is common around the world—indeed, salty oceans cover more than two-thirds of the globe. Typical saltwater found in our oceans is about 3.5% salt by weight. But in some areas, we find naturally occurring saltwater that's far saltier. The saltiest water yet discovered is more than 12 times saltier than typical seawater.

Gaet’ale is a pond in Ethiopia which currently holds the record as the most saline water body on Earth. The water in that pond is 43.3% dissolved solids by weight—most of that being salt. This kind of water is called hypersaline for its extreme salt concentration.

In the video below, Professor Martyn Poliakoff explains this natural phenomenon—why it's so salty, how the temperature of the pond affects its salinity, and even why this particular saltwater has a yellow tint. Enjoy:

For the paper Poliakoff describes, check out this abstract.

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