By Maan Alhmidi, The Canadian Press on November 24, 2020.
OTTAWA – A new poll suggests many Canadians are gaining weight because they’re eating more and exercising less during COVID-19 pandemic.
Nearly one-third of respondents in the survey conducted by Leger and the Association for Canadian Studies said they have put on weight since March, compared to 15 per cent who said they lost weight over that time.
As well, about one-third of respondents said they’re exercising less, while 16 per cent said they’re working out more since the first wave of the pandemic landed in Canada in the spring.
Jack Jedwab, president of the Association for Canadian Studies, suggested that one reason may be a rush for comfort food to deal with pandemic-related anxieties.
Respondents in the survey who said they were “very afraid” of COVID-19 were more likely to report gaining weight, eating more and exercising less.
“The more anxiety you have, the more likely it is that you know you’re eating more,” Jedwab said.
“People who are least anxious about COVID (are) the ones that are not eating more than usual and are not gaining weight.”
The online survey of 1,516 Canadians was conducted Oct. 29-31 and cannot be assigned a margin of error because internet-based polls are not considered random samples.
Dr. Yoni Freedhoff, an associate professor of family medicine at the University of Ottawa, said there are plausible reasons to connect weight gain or loss with the pandemic, but he hadn’t seen any studies to convince him that’s the case.
Some people are “not reliant on restaurants constantly” and “cooking more frequently in their homes,” which Freedhoff said may be leading to weight loss or better dietary choices. Others are eating more, he said, relying on comfort food “because they’re anxious as a consequence of the pandemic, or the tragedies that have gone on in their lives.”
Jedwab said the country needs to also be mindful of mental health issues that can affect the physical health of Canadians.
“With the winter coming, it’ll be even more challenging, in some parts of the country, to maintain a healthy lifestyle in terms of walking, in terms of doing basic things that will help us address our anxieties,” he said, pointing to lack of access for some to gyms subject to local lockdowns.
Some of those exercise classes have gone online. Gabriel Shaw, a kinesiologist from Victoria, B.C. said he has offered virtual classes to give his clients an chance to be physically active.
Shaw said the classes don’t provide people with a sense of community like in-person classes, which he said is important for some people to exercise consistently.
“The best bet for people is to find a way they can enjoy it. That might be going out for a social distance walk or hike or run or bike with a friend,” Shaw said. “That might be finding a Zoom thing that you can get on like dancing or even other activities where you have friends.”
Shaw said people should also try learn a new skill like dancing, yoga, rock climbing, or take up running to keep things fresh and enjoyable, which is key to exercising long and well.
This report by The Canadian Press was first published Nov. 24, 2020
This story was produced with the financial assistance of the Facebook and Canadian Press News Fellowship.
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Only 31 Magnetars Have Ever Been Discovered. This one is Extra Strange. It’s Also a Pulsar – Universe Today
Some of the most stunningly powerful objects in the sky aren’t necessarily the prettiest to look at. But their secrets can allow humanity to glimpse some of the more intricate details of the universe that are exposed in their extreme environs. Any time we find one of these unique objects it’s a cause for celebration, and recently astronomers have found an extremely unique object that is both a magnetar and a pulsar, making it one of only 5 ever found.
The object, called J1818.0-1607, was first detected in March by NASA’s Neil Gehreis Swift Telescope. It was first classified simply as a magnetar – one of only 31 ever found. Magnetars are a type of neutron star that has the strongest magnetic field ever detected – millions of billions of times stronger than that of Earth. But J1818.0-1607 wasn’t the same as other magnetars found so far.
It appeared to be the youngest, with an estimated age of 500 years. Correspondingly, it also spins faster than any other observed magnetar. Younger magnetars will spin more quickly than older ones, which have had a chance to slow down some. J1818.0-1607 takes the cake with a blistering rotational speed of 1.4 seconds.
Finding a unique magnetar such as this will always attract other astronomers, and some brought other kinds of telescopes to bear. One of those telescopes was the Chandra X-ray Observatory, which a team led by researchers from the University of West Virginia and the University of Manitoba commanded to look at the newly found magnetar less than a month after its original discovery.
Chandra is able to see in the X-ray spectrum, so it was able to calculate the efficiency with which the object was translating its decreasing spin energy into X-rays. That efficiency was in line with another type of object, known as a rotation-powered pulsar.
Pulsars are a type of neutron star that repeatedly pulses out radiation as it spins. Observations from other telescopes, including the Very Large Array, provided supporting data for the magnetar to also be a pulsar. That puts it on a very short list of only 5 objects ever discovered that combined the characteristics of both types of object.
All of the mysteries of the newly discovered object are not yet solved, however. One is where all the debris has gone. All neutron stars are formed as a result of a supernova, and J1818.0-1607 is no exception. However, at such a young age, astronomers would expect to see the debris field from the explosion. There was some that Chandra picked up, however, it is much farther away than expected, implying that J1818.0-1607 is either much older than previously thought, or that it exploded with such force that it blew the debris field out much faster than other known neutron stars.
Either hypothesis is viable, and of course more data will need to be collected in order to truly solve that mystery. But the discovery of J1818.0-1607 and its subsequent observation are an excellent example of the kind of science that is possible when multiple instruments operating in multiple spectra are brought to bear on a single object of interest. With luck that coordination will lead to more discoveries of these ultra rare combinations of magnetically powerful lighthouses.
NASA: Chandra Studies Extraordinary Magnetar
NASA: A Cosmic Baby is Discovered and Its Brilliant
Sci-News: Astronomers Discover Youngest Magnetar Ever
UT: A brand new magnetar found, it’s only 240 years old
Lead Image: Composite image of J1818.0-1607 in Xray and infrared.
Credit: NASA / CXC / U West Virginia / H. Blumer / JPL-CalTech / Spitzer
Giant worms terrorized the ancient seafloor from hidden death traps – Livescience.com
Gigantic predatory marine worms that lived about 20 million years ago ambushed their prey by leaping at them from underground tunnels in the sea bottom, new fossils from Taiwan reveal.
These monster worms may have been ancestors of trap-jawed modern Bobbit worms (Eunice aphroditois), which also hide in burrows under the ocean floor and can grow to be 10 feet (3 meters) long. Based on fossil evidence from Taiwan, the ancient worms’ burrows were L-shaped and measured about 7 feet (2 m) long and 0.8 to 1.2 inches (2 to 3 centimeters) in diameter, researchers recently reported in a new study.
The soft bodies of such ancient worms are rarely preserved in the fossil record. But scientists found fossilized imprints, also known as trace fossils, left behind by the worms; some of these marks were likely made as they dragged prey to their doom. The researchers collected hundreds of these impressions to reconstruct the worm’s tunnel, the earliest known trace fossil of an ambush predator, according to the study.
Bobbit worms are polychaetes, or bristle worms, which have been around since the early Cambrian period (about 543 million to 490 million years ago), and their hunting habits were swift and “spectacular,” the scientists wrote. Modern Bobbit worms build long tunnels to accommodate their bodies; they hide inside and then lunge out to snap prey between their jaws, hauling the struggling creature into the subterranean lair for eating. This “terror from below” grasps and pierces its prey with sharp pincers — sometimes slicing them in half — then injects toxins to make prey easier to digest, according to Smithsonian Ocean.
Researchers examined 319 fossilized tunnel traces in northeastern Taiwan; from these traces, they reconstructed long, narrow burrows that resembled those made by long-bodied modern Bobbit worms. And preserved details in the rock further hinted at how ancient predatory worms might have used these lairs, according to the study.
“We hypothesize that about 20 million years ago, at the southeastern border of the Eurasian continent, ancient Bobbit worms colonized the seafloor waiting in ambush for a passing meal,” the study authors reported. Worms “exploded” from their burrows when prey came close, “grabbing and dragging the prey down into the sediment. Beneath the seafloor, the desperate prey floundered to escape, leading to further disturbance of the sediment around the burrow opening,” the scientists wrote.
As the ancient worms retreated deeper into their tunnel with the thrashing prey, the struggle agitated the sediment, forming “distinct feather-like collapse structures” that were preserved in the trace fossils. The researchers also detected iron-rich pockets in disturbed areas near the tops of the tunnels; these likely appeared after worms reinforced the damaged walls with layers of sticky mucus.
Though no fossilized remains of the worms were found, the scientists identified a new genus and species, Pennichnus formosae, to describe the ancient animals, based on their burrows’ distinctive forms.
The likely behavior that created the tunnels “records a life and death struggle between predator and prey, and indirectly preserves evidence of [a] more diverse and robust paleo-ecosystem than can be interpreted from the fossil and trace fossil record alone,” the study authors reported.
The findings were published online Jan. 21 in the journal Scientific Reports.
Originally published on Live Science.
COVID-19 outbreak declared over at Coastal Gas Link work sites – CKPGToday.ca
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