Stanford has developed a roadside breathalyzer for weed


Blood, breath and urine. These are the holy trinity of determining alcohol intoxication but are virtually useless when measuring the amount of THC in your system thanks the the molecule’s ability to remain present in bodily fluids for up to a month after consumption. However, a technological breakthrough from Stanford University could soon enable law enforcement to accurately determine how blunted you are as soon as they pull you over.

Rather than the three standard fluids, Stanford’s "potalyzer" measures the amount of THC present in your saliva. It’s reportedly accurate enough to detect as little as 0 to 50 nanograms of THC per milliliter of spit. The system, developed by Dr. Shan Wang and his team, uses magnetic biosensors to detect the THC molecules present in saliva. The technology actually grew out of Wang’s earlier research into in vitro cancer diagnostics and magnetic information storage.

The test itself involves first mixing the saliva sample with antibodies that bind to the THC molecules and act as markers. The sample is then spread on a test strip that’s been pre-coated in THC and loaded into a handheld measuring device. The more THC that’s present in the sample, the fewer antibodies will be free to bind with the THC on the test strip. By measuring the amount of unbound THC on test strip, the system can accurately estimate how much THC was present in the initial sample. This estimate is then confirmed by applying magnetic nanoparticles that are precisely engineered to only bind with the THC-antibodies and measuring the electrical differential. The meter’s results are then displayed on a Bluetooth-connected mobile device.

Interestingly, this technology could easily be applied to almost any small molecule including morphine, heroin, meth or any number of illicit or prescription substances. Of course, even if the potalyzer works as advertised, we’re still going to have to wait for existing laws to catch up to the technology. In Colorado, for example, where recreational cannabis use is perfectly legal, there are no strict limits on the amount of THC you can have in your system that determines DWI culpability — the entire process is left up to the officer’s discretion. While devices like this can help curb discretionary abuses by law enforcement, more research into how one’s tolerance impacts their ability to handle different amounts of THC will be necessary to prevent the establishment of unfair arbitrary legal limits.

from Engadget

How To Prevent Stress Overload Easily: Here’s A Theory Of Stress You Should Know



If you understand the theory of cumulative stress, you’ll know the easy ways to recover before you’re stressed out.

This post originally appeared on James Clear

The Theory of Cumulative Stress: How to Recover When Stress Builds Up

It was my first year of graduate school and my professor was standing at the front of the room. He was telling our class about a mistake he made years before.

About a decade earlier, my professor had been one of the senior executives at Sears, Roebuck & Company, the large department store chain. They were in the middle of a massive national campaign and preparing for a major brand launch. My professor was leading the operation.

For almost two months prior to the launch day, he was flying all over the country to strike up buzz with major partners and media companies. While criss-crossing the country on flight after flight, he was also trying to run his department from the road. For weeks on end he would meet with the media and business partners all day, answer emails and phone calls all night, squeeze in 3 or 4 hours of sleep, and wake up to do it all over again.

The week before the big launch day, his body gave out on him. He had to be rushed to the hospital. Major organs had started to fail from the chronic stress. He spent the next eight days lying in a hospital bed, unable to do anything as the launch day came and went.

Your Bucket of Health and Energy

Imagine that your health and energy are a bucket of water.

In your day-to-day life, there are things that fill your bucket up. These are inputs like sleep, nutrition, meditation, stretching, laughter, and other forms of recovery.

There are also forces that drain the water from your bucket. These are outputs like lifting weights or running, stress from work or school, relationship problems, or other forms of stress and anxiety.


The forces that drain your bucket aren’t all negative, of course. To live a productive life, it can be important to have some of things flowing out of your bucket. Working hard in the gym, at school, or at the office allows you to produce something of value. But even positive outputs are still outputs and they drain your energy accordingly.

These outputs are cumulative. Even a little leak can result in significant water loss over time.

The Theory of Cumulative Stress

I usually lift heavy three days per week. For a long time, I thought I should be able to handle four days per week. However, every time I added the extra workout in, I would be just fine for a few weeks and then end up exhausted or slightly injured about a month into the program.

This was frustrating. Why could I handle it for four or five weeks, but not longer than that?

Eventually I realized the issue: stress is cumulative. Three days per week was a pace I could sustain. When I added that fourth day in, the additional stress started to build and accumulate. At some point, the burden became too big and I would get exhausted or injured.

In extreme cases, like that of my professor, this snowball of stress can start to roll so fast that it pushes you to the brink of death. But it’s important to realize that cumulative stress is something that you’re dealing with even when it isn’t a matter of life or death. The stress of extra workouts or additional mileage. The stress of building a business or finishing an important project. The stress of parenting your young children or dealing with a bad boss or caring for your aging parents. It all adds up.

Keeping Your Bucket Full

If you want to keep your bucket full, you have two options.

  1. Refill your bucket on a regular basis. That means catching up on sleep, making time for laughter and fun, eating enough to maintain solid energy levels, and otherwise making time for recovery.
  2. Let the stressors in your life accumulate and drain your bucket. Once you hit empty, your body will force you to rest through injury and illness. Just like it did with my professor.

Recovery is Not Negotiable

I’m in the middle of a very heavy squat program right now.

I’ve spent the last two years training with really easy weights and gradually working my way up to heavier loads. I’ve built a solid foundation of strength. But even with that foundation, the weights on this program are heavy and the intensity is high.

Because of this, I’m taking special care to allow myself additional recovery. I’m allowed to sleep longer than usual. If I need to eat more, so be it. Usually, I’m lazy about stretching and foam rolling, but I have been rolling my little heart out every day for the last few weeks. I’m doing whatever I can do to balance the stress and recovery deficit that this squat program is placing on me.


Because recovery is not negotiable. You can either make time to rest and rejuvenate now or make time to be sick and injured later. Keep your bucket full.

Featured photo credit: via

The post How To Prevent Stress Overload Easily: Here’s A Theory Of Stress You Should Know appeared first on Lifehack.

from Stepcase Lifehack

A new fitness band can tell you exactly how dehydrated you are and how much water to drink


lvl band

Even if you drink eight glasses of water a day, you still might
not be properly hydrated.

That’s the message Dr. Dustin Freckleton wants to get out to the
public with a new product called the LVL
band — a wearable fitness tracker that uses
infrared light to monitor your hydration levels in real-time and
offer advice about how much water you need to stay healthy.

“Everybody understands very strongly how important hydration is,”
says Freckleton, who was inspired to create LVL band after
suffering a severe hydration-related stroke when he was in
medical school.

Even at the sprightly age of 25, Freckleton needed three months
of physical therapy before he learned to walk again. And though
he eventually completed medical school, he decided that becoming
a practicing physician was less important than helping the public
avoid the negative effects of dehydration:
poor sleep
poor cognitive function
, and, in extreme cases, debilitating

“When we express that we not only measure hydration, but the
problems it solves, like around sleep and exercise, there’s an
A-ha moment for people when they say ‘Oh my gosh, that’s what I
need,'” Freckleton, the CEO of the data and performance company
BSX Technologies, tells Business Insider.

lvl band app screenshot

bluetooth-enabled app for LVL band, alerting the user to their
current hydration level and providing advice to replace lost


In the same way your eye uses incoming light to create a visual
image, the LVL band shines near-infrared light into your body,
which then comes back to the band in the form of a spectroscopic
image — essentially a fingerprint from inside your bloodstream.
Software in the band analyzes that information to
measure specific biometrics, like heart rate and hydration

Throughout the day, the LVL band gives wearers a small vibration
to notify them when their hydration levels are getting low. A
smartphone app that accompanies the band offers an estimated
dehydration level, say “18% dehydrated,” and advises you to drink
a certain amount of water accordingly.

Over time, Freckleton says, the app will learn when you tend to
exercise and go to bed and calibrate its recommendations based on
those behavior patterns. For example, you might get a
notification encouraging you to drink 12 ounces of water two
hours before your regular workout time, so that you’re in the
best state possible to exercise.

Later that night, you might get another notification reminding
you to drink 10 ounces before bed, to keep you hydrated as you go
6-8 hours without water.

LVL band

Read-outs of varying
hydration levels on the LVL band.


Freckleton believes the device is superior to other fitness
trackers because of what’s under the hood. Most other
trackers use green light technologies to gather biometric data,
but Freckleton says the light doesn’t penetrate very far and
too easily gets absorbed in the body. The margin of error in its
calculations— say, in measuring heart rate — is therefore greater
than it would be with the LED technology found in LVL band.
gets 10 times deeper into the body and easily reports back to the
with the desired fingerprints.

This near-infrared technology isn’t new, Freckleton says,
but its application is novel.

Hospitals, for instance, have been using infrared light therapy
for years to
speed up the healing process
for burn victims. Even Olympic
prefer the technology
for recovery because it helps cells
regenerate more quickly, getting the athletes back to

Freckleton says companies like Apple and Garmin are already
making the switch to red light in some of their products because
they realize how much better it is for measuring the body’s
signals. When the LVL becomes available in summer 2017, the
device will cost $199 (though people who pre-order through Kickstarter will
receive it for up to 50% off).

BSX began researching red light technologies five years ago. To
date it’s gathered data on thousands of subjects, many of whom
have entered BSX’s scorching-hot “Sweat Lab” to willfully get
dehydrated through vigorous exercise. As part of the research,
BSX tracks subjects’ health via blood and urine samples and
cross-checks the LVL band’s readings with the formal results.

lvl band

So far, the data has come back wholly positive. Results shared
with Business Insider show that the LVL band is highly accurate,
exceeding even military or first-responder standards for
hydration measurement, Freckleton says. The measured levels were
only 0.32% off from the actual values tested in the lab. The band
also tracks heart rate with similar accuracy.

According to Freckleton, the results are so specific that they
can predict how much better you’ll perform in several hours based
on how much water you drink right now. That’s how smart the data
has allowed the algorithm to become.

“Before a person goes to bed, let’s say the middle of the
afternoon the previous day,” he explains, “we can say, ‘Hey,
you’re about 19 ounces low right now. You’re gonna sleep 23%
better tonight and feel better in the morning if you drink that

He adds that the LVL band’s ability to offer specific
recommendations demonstrates that data isn’t the ultimate goal —
regular people often need help interpreting all those random

He admits that there are challenges in convincing people that
hydration is worth adding a tracker to your wrist. Yes, people
should drink when they are thirsty, Freckleton says, but that
common-sense approach only gets you so far. Given his own
history, Freckleton wants to empower people as much as he
can. And he’s confident the data will back up the
band’s utility.

“[LVL band] takes the information and puts it into action,” he
says. “It gives you something very real to act on and see the
benefit from the next day.”

from SAI

Diego the Loverboy Sires Over 800 Baby Tortoises, Saves His Species

Diego the Loverboy Sires Over 800 Baby Tortoises, Saves His Species
Image: Brad Perkins/Flickr

Some acquire greatness through intellect or unbridled creativity. But Diego the tortoise sexed his way into legend.

Diego, 100, is a rare breed of tortoise called Chelonoidis hoodensis. These animals are so rare that they only exist on one of the oldest islands in the Galápagos. In 1976, when Diego was living at the San Diego Zoo, scientists realized that this handsome hero in a half shell was actually one of the last remaining tortoises of the Chelonoidis hoodensisas species. Diego then became the dominant male in a captive breeding program in the Galápagos.

Over the decades, Diego has sired more than 800 offspring and effectively saved his entire species from extinction. For his efforts, he quickly became an internet celebrity, receiving the honorary title of “Fuck Tortoise”:

Of over 2,000 tortoises that now live on the island, and Diego is the father of 40 percent of them. Experts expect that 5,000 tortoises used to live on the island at one point. Sadly, three species of giant tortoise in the Galápagos have already gone extinct with the latest species lost just four years ago. But thanks to Diego, Chelonoidis hoodensis hopefully won’t share a similar fate.


from Gizmodo

3 tweens cooler than you absolutely slay this Metallica medley


3 tweens cooler than you absolutely slay this Metallica medley

Move over, Metallica. My dudes are here to steal the show from you old grumps. 

While most of you were wasting away your weekend watching Netflix or going apple picking, these three future stars were impressing a bunch of olds while rocking out to a Metallica medley at the Country Club Plaza in Kansas City, Missouri. 

The clip, which was originally uploaded to Facebook by Catherine Rose, has racked up more than 10 million views since Sunday. Rose explains in the comment section that the boys’ parents are being careful about revealing the names of these three talented bros, but considering how metal they are, we’re sure they’ll rebel against that soon. 

from Mashable!

Here’s how scientists accelerate particles to 99.99% the speed of light



By now, you might be familiar with the concept of particle accelerators through the work of the Large Hadron Collider (LHC), the monstrous accelerator that enabled scientists to detect the Higgs boson.

But the LHC is not alone — the world is equipped with more than 3o,000 particle accelerators that are used for a seemingly endless variety of tasks. Some of these machines, like the LHC, accelerate particles to nearly the speed of light to smash them together and probe the fundamental building blocks of our universe. Others are used to seal milk cartons and bags of potato chips.

Brookhaven National Laboratory in New York is home to one of the world’s most advanced particle accelerators: the National Synchrotron Light Source II (NSLS II). The NSLS II will allow researchers to do a wide range of science varying from developing better drug treatments, to building more advanced computer chips, to analyzing everything from the molecules in your body to the soil you walk on.

When scientists accelerate particles to these crazy speeds in the NSLS II, they force them to release energy which they can manipulate to do a mind-boggling array of different experiments.

As electrons moving at nearly the speed of light go around turns, they lose energy in the form of radiation, such as X-rays. The X-rays produced at the NSLS II are extremely bright — a billion times brighter than the X-ray machine at your dentist’s office. When scientists focus this extremely bright light onto a very small spot, it allows them to probe matter at an atomic scale. It’s kind of like a microscope on steroids.

Here’s how the NSLS II pushes particles to 99.99% the speed of light — all in the name of science.

SEE ALSO: A year ago, scientists cracked one of Einstein’s greatest mysteries — now a bizarre new form of astronomy is emerging

First, the electron gun generates electron beams and feeds them into the linear accelerator, or linac.

In the linac, electromagnets and microwave radio-frequency fields are used to accelerate the electrons, which must travel in a vacuum to ensure they don’t bump into other particles and slow down.

Next, the electrons enter a booster ring, where magnets and radio-frequency fields accelerate them to approximately 99.9% percent the speed of light. Then they are injected into a circular ring called a storage ring.

See the rest of the story at Business Insider

from SAI

The Power Nap Strategies That Jumpstart Your Brain And Let You Be Productive All Day Long



Does napping seem like a very difficult task for you to observe on a daily basis? OK, let’s say you’ve got so many job and assignments to do at work that you rarely have time to go for a short nap. And yet, you spend more hours surfing the internet all night long rather than spending it by getting some quality sleep in.

Why and when you should nap

Research and findings show that the perfect time to have a fulfilling nap is in between the lunch hours 1 pm to 3 pm. If at the office, napping shouldn’t take you more than 30 to 40 minutes, max, to complete before returning to work feeling refreshed.

Give it a try, and then you can thank me for the serene, innermost peace and re-invigoration that you will start feeling.

One good thing about taking a midday nap is that it helps you reduce stress and lowers the risk of unexpected pandemic diseases like stroke, diabetes, and obesity. The best part of it is – napping will make you think smarter, become more productive, and, most importantly, feel safer. However, sometimes you may not have much control over when you can finally take a nap, and when you do get to nap, you risk waking up drowsy and even more tired than before.

How does napping affect your health?

  • If you’re a workaholic, however, you may never have the opportunity to meet all your goals without compromising on your health. But putting your health second is like saying you’re not interested in living!
  • Ever visited the doctor before and being advised to take a break for the sake of your health and perhaps take better care of your health, nutrition, exercise, and serenity? A lot of front desk support staffs (i.e. receptionists) fall into this category – as they insist on facing more stress on a daily basis due to the nature of their job.
  • Energy flows through the body and veins only when the body is relaxed enough, so taking well-timed periods of relaxation may also help your eyes see clearer and smarter.
  • Despite the busy schedule and commitments, health must come first. This is why a typical Central London Black Cab chauffeur makes sure to maintain 10 hours plus of sleep per night and two short nap breaks in the day to stay alert and refreshed.

You’re right to be confused, I guess. To help you get the real facts, even recent research and findings linked napping to higher mortality. Big corporations, businesses, and colleges across the United States have just begun drastic installation of nap rooms to boost productivity. And, someday, there may even be a napping consensus.

Napping is a very powerful technique that will help you perform and become more productive even without a noon time meal.

Psychologist Dr. Sara Mednick of the University of California, Riverside and author of New York Times health and fitness bestseller “Take a Nap! Change your life”, once emphasized on this. Determining whether or not napping is right for you depends on a few factors. Ask yourself why you are taking the nap.

If you’re spending a big chunk of your day feeling sleepy and out of sorts, it’s probably that your drowsiness may be caused by insomnia, sleep apnea, stress or slumber-impeding health conditions.

Here are 3 strategies that will jumpstart your brain and help you become more productive during the day.

Strategy 1: Do the 30-minute limit formula

Perfectly timed short naps should unambiguously last for around 25-30 minutes says “the sleep doctor” Dr. Michael Breus. With a nap of just 25-30 minutes, your immune system is strengthened, more so, prevents you from falling into a totally deep sleep and waking up only to realize you’re more tired.

Strategy 2: A caffeine nap could do the trick

Dr. Breus suggests trying a short caffeine rest, or as he often calls it, a “Napalatte”, could be just the thing that will completely refresh your work day.

A caffeine nap can leave you feeling additionally invigorated just a short time after waking from your nap. After taking a few sips of espresso, take a 15-minute nap quickly after that. This way, the caffeine will kick in directly after you wake up, leaving you feeling completely revived and regenerated.

Strategy 3: For insomniacs – The key to a deep, good night’s sleep

In case you’re restless or feeling overburdened, then you stand the chance to profit extraordinarily from a brief daytime nap as a supplement to your night rest. However, if you’re battling with any form of sleeping disorder; i.e., you are continually finding it difficult to sleep, then having a good night’s sleep will increase your productivity and health more than trying to sleep during the day. Research findings revealed that for insomniacs, avoiding naps will increase your chances of sleep continuity.

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