Archeologists Discover 100,000-Year-Old Human Footprints in Morocco

 Images from the site on the coast of the Larache city, on the Atlantic ocean. (Nature journal)
Images from the site on the coast of the Larache city, on the Atlantic ocean. (Nature journal)
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Archeologists Discover 100,000-Year-Old Human Footprints in Morocco

 Images from the site on the coast of the Larache city, on the Atlantic ocean. (Nature journal)
Images from the site on the coast of the Larache city, on the Atlantic ocean. (Nature journal)

Archaeologists in Morocco have discovered more than 80 human footprints described as the oldest in North Africa and the southern Mediterranean. The footprints are believed to be left by five individuals on a beach in northern Morocco, around 100,000 years ago.

According to AFP, the footprints were discovered on the coast of Larache, a city 90 kilometers south of Tangier, by archaeologists from Morocco, Spain, France, and Germany.

“The footprints were some of the world’s best-preserved human traces and the oldest in North Africa and the southern Mediterranean. The discovery opens new research horizons on prehistory in Morocco,” said Anass Sedrati, member of the research project.

This discovery was made coincidentally during a field mission in July 2022, as part of a scientific research project on the origins and dynamics of the boulders in the region.

Tests showed that “85 of the prints belong to at least five individuals who were likely searching for food in the sea,” said Sedrati.

The team suggests that those five individuals either lived in a region close to the site, or were only crossing the beach. “They were children, teens and adults,” the researchers noted.

The findings, published in the journal Nature in January, showed that these prints were preserved “in the upper area of the beach covered with sediments.”

Animal traces had also been discovered and efforts are ongoing to date them, according to Sedrati, who is the curator at the archaeological site of Lixus Larache.

In 2017, some homo sapiens remains dating back 300,000 years were unearthed in northwest Morocco, in the Jebel Irhoud region.

In other separate discoveries in recent years, prints dating back to the prehistoric era were found in Tangier, Tetouan, Rabat (north) and Essaouira (south).

The latest discovery achieved by the combined efforts of scientists from different specializations is “the first building block for in-depth research on the settlement and activity of Homo sapiens in Morocco,” Sedrati concluded.



Should You Stretch before Exercise? After? Never? Here’s What to Know

 Philadelphia Eagles stretch as they get ready during practice at NFL football training camp, Thursday, July 25, 2024, in Philadelphia. (AP)
Philadelphia Eagles stretch as they get ready during practice at NFL football training camp, Thursday, July 25, 2024, in Philadelphia. (AP)
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Should You Stretch before Exercise? After? Never? Here’s What to Know

 Philadelphia Eagles stretch as they get ready during practice at NFL football training camp, Thursday, July 25, 2024, in Philadelphia. (AP)
Philadelphia Eagles stretch as they get ready during practice at NFL football training camp, Thursday, July 25, 2024, in Philadelphia. (AP)

For many people of a certain age, high school gym class began with reaching for their toes. Then, over the years, we were told it was better to stretch after exercise.

It turns out, both those things can be true, but the differing advice has created some confusion.

Stretching can help make you more flexible, improve range of motion in your joints — and feel good. David Behm, who researches human kinetics at Memorial University of Newfoundland in St. John’s, Canada, offers this advice on when to stretch and how to do it safely:

Warm up first

It’s almost always good to stretch, but it’s better if you warm up first, said Behm, author of "The Science and Physiology of Flexibility and Stretching." He recommends a light aerobic activity such as jogging, walking or cycling for five or 10 minutes.

Follow that with some static stretching, the traditional way of reaching and holding a position (think back to that gym class). You can then do activity-specific dynamic stretching, in which you warm up the muscles with repetitive movements like leg lifts.

Behm says one minute is "the magic number" for how long to do static stretching per muscle group without fatigue.

Expand your definition of 'stretching'

Should you always stretch before exercising? If it's traditional stretching, not necessarily.

The better question, Behm says, is, "Should people increase their range of motion? Should people have better flexibility? And that is yes, because it helps prevent injuries. It helps with health. But you don’t have to stretch to achieve that."

Resistance training, for instance, can be an effective form of stretching, he said. Doing a chest press increases range of motion in your deltoids and pecs, whether with barbells, dumbbells or machines, so there is no need to stretch beforehand. Just make sure to start with a small amount of weight to warm up and then add more to train.

"You probably don’t have to do extra stretching unless you’re a gymnast, a figure skater, or even a golfer who needs a great range of motion through that swing," Behm said.

Nor do you need to stretch first if you’re going for a leisurely run. Simply start with a slow jog to warm up and then increase the pace.

Don't do it if it hurts

After exercise, "light stretching is OK, as long as you don't reach a point where you're feeling pain," Behm said. Since your muscles will be warm by that point, overdoing it makes you more likely to injure yourself.

Foam rollers can help with muscle recovery and have been shown to increase range of motion as well as stretching.

Do some static stretching before sports

If you’re playing a sport, Behm said, static stretching beforehand helps reduce muscle and tendon injury.

"If you’re going to do an explosive movement, change of direction, agility, sprint, any of these explosive activities that involve your muscles and tendons," he said, "you’re going to be stronger if you do static stretching."

People can especially get in trouble when they go back to a sport they used to play, whether it's tennis, surfing or any sort of team activity.

Also, stretch both sides equally. Lacking flexibility on one side also can lead to injury.

Sounds simple. Why all the confusion? Different studies over the years have either encouraged or discouraged stretching before exercise. Behm says that partly because some studies didn't reflect real-life conditions, or were designed with elite athletes in mind, not regular people.

"If you’re Usain Bolt, it makes a difference," said Behm. Not so much for the rest of us.