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Does Hysterical Strength Really Exist?

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You hear about cases every so often: a mother lifting a car to rescue a pinned child, performing a feat of strength not usually available to humans. Evidence is almost always anecdotal -- like when a man in Arizona lifted a car to free a cyclist who'd been hit and dragged in 2006, witnessed only by those involved in the accident -- but these things happen so rarely (if they do indeed happen at all) that it's difficult to observe them under repeatable, scientific circumstances. But while proof of the events themselves remains hearsay, there is a theory, at least, among researchers that such things are at least possible.
It's all about adrenaline. Some believe that on a day-to-day basis we only use a small percentage of our muscles' capability. But adrenaline and noradrenaline, hormones that creates a state of fight-or-flight readiness in stressed humans, have the capability to raise the heart rate, dilate the pupils, increase respiration, slow digestion and, yes, allow muscles to contract more than they would normally. Here's a more technical blow-by-blow from Discovery Health:

When adrenaline is released by the adrenal medulla -- an interior region of the adrenal glands, which are located just above your kidneys -- it allows blood to flow more easily to your muscles. This means that more oxygen is carried to your muscles by the extra blood, which allows your muscles to function at elevated levels. Skeletal muscles -- those attached to bones by tendons -- are activated by electrical impulses from the nervous system. When they're stimulated, muscles contract, meaning they shorten and tighten. This is what happens when you lift an object, run or throw a punch. Adrenaline also facilitates the conversion of the body's fuel source (glycogen) into its fuel (glucose). This carbohydrate gives energy to muscles, and a sudden burst of glucose also allows muscles to strengthen further.

So does that mean it's possible to perform superhuman feats of strength? The evidence is frustratingly thin here -- but there's one example of our muscles' amazing capabilities that may point to the possibility of hysterical strength, and that's what happens when our bodies are shocked with electricity. You've heard of people being thrown across rooms by shocks, or their hands clamping down on live wires so hard they can't be loosed? It's not the current that causes it, but our muscles' reaction to the current. If nothing else, it demonstrates the potential for muscle use that's not normally available to us.

So the verdict is: maybe! But until scientists begin staging lab experiments where moms have to pull their children out from underneath cars, we may never know for certain.

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A Simple Way to Charge Your iPhone in 5 Minutes
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Spotting the “low battery” notification on your phone is usually followed by a frantic search for an outlet and further stress over the fact that you may not have time for a full charge. On iPhones, plugging your device into the wall for five minutes might result in only a modest increase of about three percent or so. But this tip from Business Insider Tech may allow you to squeeze out a little more juice.

The trick? Before charging, put your phone in Airplane Mode so that you reduce the number of energy-sucking tasks (signal searching, fielding incoming communications) your device will try and perform.

Next, take the cover off if you have one (the phone might be generating extra heat as a result). Finally, try to use an iPad adapter, which has demonstrated a faster rate of charging than the adapter that comes with your iPhone.

Do that and you’ll likely double your battery boost, from about three to six percent. It may not sound like much, but that little bit of extra juice might keep you connected until you’re able to plug it in for a full charge.

[h/t Business Insider Tech]

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Trying to Save Money? Avoid Shopping on a Smartphone
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Today, Americans do most of their shopping online—but as anyone who’s indulged in late-night retail therapy likely knows, this convenience often can come with an added cost. Trying to curb expenses, but don't want to swear off the convenience of ordering groceries in your PJs? New research shows that shopping on a desktop computer instead of a mobile phone may help you avoid making foolish purchases, according to Co. Design. Ying Zhu, a marketing professor at the University of British Columbia-Okanagan, recently led a study to measure how touchscreen technology affects consumer behavior. Published in the Journal of Retailing and Consumer Services, her research found that people are more likely to make more frivolous, impulsive purchases if they’re shopping on their phones than if they’re facing a computer monitor. Zhu, along with study co-author Jeffrey Meyer of Bowling Green State University, ran a series of lab experiments on student participants to observe how different electronic devices affected shoppers’ thinking styles and intentions. Their aim was to see if subjects' purchasing goals changed when it came to buying frivolous things, like chocolate or massages, or more practical things, like food or office supplies. In one experiment, participants were randomly assigned to use a desktop or a touchscreen. Then, they were presented with an offer to purchase either a frivolous item (a $50 restaurant certificate for $30) or a useful one (a $50 grocery certificate for $30). These subjects used a three-point scale to gauge how likely they were to purchase the offer, and they also evaluated how practical or frivolous each item was. (Participants rated the restaurant certificate to be more indulgent than the grocery certificate.) Sure enough, the researchers found that participants had "significantly higher" purchase intentions for hedonic (i.e. pleasurable) products when buying on touchscreens than on desktops, according to the study. On the flip side, participants had significantly higher purchase intentions for utilitarian (i.e. practical) products while using desktops instead of touchscreens. "The playful and fun nature of the touchscreen enhances consumers' favor of hedonic products; while the logical and functional nature of a desktop endorses the consumers' preference for utilitarian products," Zhu explains in a press release. The study also found that participants using touchscreen technology scored significantly higher on "experiential thinking" than subjects using desktop computers, whereas those with desktop computers demonstrated higher scores for rational thinking. “When you’re in an experiential thinking mode, [you crave] excitement, a different experience,” Zhu explained to Co. Design. “When you’re on the desktop, with all the work emails, that interface puts you into a rational thinking style. While you’re in a rational thinking style, when you assess a product, you’ll look for something with functionality and specific uses.” Zhu’s advice for consumers looking to conserve cash? Stow away the smartphone when you’re itching to splurge on a guilty pleasure. [h/t Fast Company]

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