‘Five to ten seconds appears to be optimal’: the science behind hugs

Be it a brief squeeze or a bone-crushing bear hug, few can deny the comfort of a farewell cuddle from a person you love. Yet in an effort to keep traffic flowing at Dunedin international airport on New Zealand’s South Island, bosses have decided to impose a three-minute cap on hugging in the airport’s drop-off zone.Passengers wishing to engage in longer and fonder farewells have been instructed to use the car park instead.In contrast, Heathrow has told passengers to take as much time as they need saying goodbye to loved ones in departures.New signage in the airport’s departures area shows two people hugging, with the words “Max hug time, unlimited. Fond farewells in departures, encouraged”.This is fortunate, because hugging bestows an array of physical and psychological benefits, experts say.Humans are not the only creature to indulge in hug-like behaviour; many monkeys and apes comb through each other’s fur, and it is likely that human hugging has evolved as an extension of this. “The basic method of social bonding for creating relationships is through physical touch,” says Prof Robin Dunbar, an evolutionary psychologist at the University of Oxford and author of The Social Brain.“What’s going on below the surface is the triggering of a highly specialised neural system in the skin that responds to a very specific stimulation – light, slow stroking at a rate of 3cm per second, which is the speed of sweeping hand movements through the fur, or across the skin – and it triggers the endorphin system in the brain, which makes you feel calm and relaxed.”While the release of endorphins helps to build and maintain close relationships, the benefits of hugging also extend to other areas of health and wellness.“Many of us know that it feels good to receive a hug, but we don’t often stop and think about the other positive effects of hugging,” says Prof Michael Banissy, a social neuroscientist at the University of Bristol and the author of When We Touch.For starters, hugs can affect our immune responses. In one study, researchers at Carnegie Mellon University in the US found a correlation between how often people experienced hugs, and their ability to fight off colds. Those who received regular hugs in the 14 days before being exposed to a common cold virus were less likely to become infected, and experienced fewer severe symptoms if they did, compared with non-huggers.Another study found that women who embraced their partner before undergoing a stressful experience had a lower biological stress response, as measured through levels of the stress hormone cortisol, compared with those who didn’t receive a hug.“In the context of going to an airport and taking a flight, you can see how hugs could play out as beneficial in terms of managing people’s anxiety or stress levels,” says Banissy. “The three-minute thing is interesting, because technically, the hormones that play a role in modulating these effects can be released within a few minutes, so that could be enough to get the benefit.”Banissy adds:“On the flip side, we know that touch and hugs are very much influenced by context; touch needs to be wanted and feel appropriate, so you might imagine that if hugging feels unnatural for any reason, you’re not going to get the same level of benefit. There’s a bit of a risk with putting a time cap on it, that people might feel a bit tense about it – although I’m told they’re not going to have hug police.”A guide to huggingQuick squeezeView image in fullscreenThe most common type of hug is what psychologists refer to as a “crisscross hug”, where the huggers’ arms are crossed over one another’s shoulders and waists. The duration matters. Although some people may prefer a slightly longer or a shorter hug, when Banissy and his colleagues at the University of Bristol studied how pleasant and under control hugs lasting one, five or 10 seconds felt, they found that one-second hugs were consistently rated the least enjoyable. “If it’s too brief, people may not necessarily feel the benefits in terms of emotional closeness and things like that, but equally, if it’s too long it can start to feel uncomfortable,” says Banissy. “Five to ten seconds appears to be optimal.”Engulfing hugView image in fullscreenWhen you’re feeling down or have received some terrible news, an engulfing hug can provide comfort and emotional support. “It tends to be restricted to emotive scenarios, as it may feel too intimate in other settings,” says Banissy. “It is where someone literally wraps their arms around you and effectively engulfs you, bringing you in really close.”Bear hugView image in fullscreenWhereas the engulfing hug typically draws the recipient in from the back, the bear hug is more of a random grab and tight squeeze. The purpose and the emotion behind the hug also differs: “Bear hugs are often a celebratory thing, like a family reunion, or recognising an accomplishment of some kind, whereas the engulfing hug is much more supportive and tender,” says Banissy.Sporty shoulder pressView image in fullscreenPhysical gestures are a common feature of team sports, including the sideways semi-hug, semi-shoulder bump. Although the cynical might read this as an attempt to avoid contamination with the other person’s sweat, research suggest these positive physical gestures still matter. Banissy says: “If you look at how often team members engage in positive touches, which includes hugs, but also things like fist bumps and high fives, you find that teams that do this more often early in the season often then go on to win more games. There’s kind of a link with this and their team cohesion.”Global leader hugView image in fullscreenHugging in professional settings can feel awkward, perhaps even more so when the world is watching and scrutinising your intent. So, no wonder politicians look so uncomfortable when they do it. Although there is scant research on how hugs affect professional transactions, “we do know that other forms of touch in professional settings set the stage for things like cooperation and trust”, says Banissy. “For instance, people who perform more handshakes before negotiating business deals are more likely to come to joint agreements, or find outcomes that are mutually beneficial. Touch plays a really important role in that space.”Dunbar says we should consider hugs as opening bids to establish the nature of relationships, and just do what feels natural or instinctive. “There are bound to be mistakes where we overbid or underbid relative to the other person, but my advice is to switch the brain off and let the body take over.”Self-hugView image in fullscreenReceiving a hug before a stressful event can help to mitigate its emotional impact, but what if you don’t have anyone to hug? Fortunately, research suggests that placing your own hands over your heart or belly, or stroking the skin of your upper arms, appears to have a similar effect.When scientists at Goethe University in Germany compared the impact of these self-soothing gestures with receiving a hug from someone else, they found that both groups released lower amounts of the stress hormone cortisol in response to a stressful situation, compared with a control group.

Embu village turns into agri-tech haven

 

Linda Kamau’s model farm in Gachuriri village, Mbeere South, Embu County. [Patrick Vidija, Standard]

Like many other countries in sub-Saharan Africa, agriculture remains the key driver of Kenya’s economy.
Although irrigation is key to improving agricultural production, data from the National Irrigation Authority indicates that only about four per cent of irrigable land is under irrigation.
The authority further indicates that Kenya, like other countries worldwide, is feeling the heat of climate change, which has negatively affected agriculture. This makes irrigation even more crucial today than before in the quest for food security.
To advance productivity and wealth generation in the agricultural sector, there is a need to increase the acreage under irrigation.
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Currently, diesel engine irrigation pumps are powering this expansion, a reality that the Renewable Energy and Energy Efficiency Partnership (REEEP) warns if unchecked could lead to considerable growth in CO2 and particulate matter pollution. The firm, which specialises in accelerating global energy transition, says investment in alternative technologies is lacking due to gaps in finance and know-how among primary segments.

Linda Kamau’s model farm in Gachuriri village, Mbeere South, Embu County. [Patrick Vidija, Standard]

Our fact-finding mission on how alternative irrigation models can reduce production costs while increasing produce led us to Linda Kamau’s model farm in Gachuriri village, Mbeere South, Embu County.
The 39-year-old has defied all odds to become a beacon of hope to many small-scale farmers. Ms Kamau is on a mission to help local farmers increase production through the use of state-of-the-art agricultural technologies to irrigate their farms.
Through her company SowPrecise Africa, she is not only leveraging her passion for agriculture but also changing the narrative of farming in dry areas.
The company focuses on optimising farming operations within Embu by harnessing advancements in agricultural technology and sharing essential resources with the farmers.

Some of the solar pannels that are installed on Linda Kamau’s model farm in Gachuriri village, Mbeere South, Embu County. [Patrick Vidija, Standard]

Through the SunRider initiative launched in 2022, Ms Kamau says they offer affordable irrigation services to low-income farmers.
SunRider features a cost-effective solar-powered irrigation system tailored specifically for farmers.
The project utilises water from the Nyamindi River and spans 20 acres of land, which she leased in 2020 with a renewable five-year lease.

Linda Kamau chats with USAID Kenya and East Africa Mission Director David Gosney who visited her model farm in Gachuriri village, Mbeere South, Embu County. [Patrick Vidija, Standard]

In 2023, her company received a $30,000 (Sh3.8 million) grant from the Young African Leaders Initiative (YALI) – a program by the United States aimed at investing in the next generation of African leaders – along with technical support to enhance her organisational structures and processes.
This funding is what she is utilising to assist smallholder farmers in her community.
Solar-powered irrigation is a simple farming technology that is radically changing the lives of thousands of smallholder farmers for the better. This applies, especially to farmers in regions where water is sparse and experience unreliable rainfall.
The United Nations Environmental Programme (Unep) says more than 95 per cent of Kenya’s agricultural output is grown in rain-fed farming systems, yet only 17 per cent of arable land is deemed suitable for rain-fed agriculture.

Linda Kamau’s model farm in Gachuriri village, Mbeere South, Embu County. [Patrick Vidija, Standard]

Although the remaining 83 per cent needs irrigation to ensure optimal crop growth due to inadequate rainfall, irrigated fields occupy only around two per cent of the total area under crops.
Ms Kamau said she ventured into the project after realising that many farmers struggled to access affordable solar-powered irrigation systems.
Her initiative uses the pay-per-you service, which is similar to the Uber model. This means an interested farmer pays some amount and the mobile solar irrigation system is installed at their farm for a certain period as per the agreement.
Ms Kamau said she was moved by the fact that although many companies across the country are providing solar-powered solutions, many farmers are still grappling with accessing affordable solar-powered irrigation systems.

Linda Kamau chats with USAID Kenya and East Africa Mission Director David Gosney who visited her model farm in Gachuriri village, Mbeere South, Embu County. [Patrick Vidija, Standard]

“We are standing on a 30-acre model farm where farmers come for first-hand experience on what solar irrigation can do. We are doing rain horse irrigation on blocs of sunflower, maize and sweet potatoes. For now, we are still at the very beginning, and we are identifying existing challenges for improvement,” she said.
She revealed that currently, five farmers have benefitted from the initiative, with some 32 acres now under solar-powered irrigation.
“In the coming year, we intend to grow the number of farmers to at least 30,” she said.
Laurence Gakuru, a farmer and one of the five beneficiaries, said he opted for solar farming due to its effectiveness and low production cost.
“I tried the diesel and electric irrigation models, but the cost was too high. I have always wanted to produce at my farm at the lowest cost per unit. Here in Embu, we have a lot of sun that is not utilised, and when I was introduced to this solar-based irrigation model, it was a great breakthrough,” said Mr Gakuru. He said although the model still faces challenges, especially in its adoption, it can go a long way in improving farmers’ welfare in remote areas.

Some of the solar pannels that are installed on Linda Kamau’s model farm in Gachuriri village, Mbeere South, Embu County. [Patrick Vidija, Standard]

Mr Gakuru called for government intervention to help them get better solar models and batteries to power the irrigation systems and lower taxes on the products.
“The biggest challenge, however, is the rapid reduction of spaces to farm. As the population grows, people want to build houses forgetting they have mouths to feed. This has made land buying and leasing an expensive affair forcing us over the farm on small available farms,” he said.
Janet Mungoti said the high production cost compounded by unpredictable weather patterns has been the biggest nightmare for small-scale farmers.
Ms Mungoti regretted that crop diseases and the existing imbalance between the production cost and the harvest have left many farmers demoralised.
“Diesel irrigation is more expensive, so when we get alternatives like solar, which cuts on cost, it gives us some form of motivation. As much as we are farming, we depend on it to meet our personal needs like school fees for our children and day-to-day upkeep,” she said.
USAID Kenya and East Africa Mission Director David Gosney said with the realities of climate change and increased cycles of drought and heavy rains, small-scale farmers can only be empowered to use technology to make business sense.
Mr Gosney, who spoke during a visit to the demonstration farm, commended the mobile solar technology, saying it goes a long way in reducing irrigation costs by over 80 per cent.

Linda Kamau’s model farm in Gachuriri village, Mbeere South, Embu County. [Patrick Vidija, Standard]

“Our goal at USAID to provide additional capital both commercial and through donations so that as they implement such projects, they can meet other family needs and live meaningful lives,” he said.
Mr Gosney said that with good access to water, healthcare facilities, and education, communities become resilient and increase land productivity.
Challenges
For her part, Ms Kamau pointed out that one barrier to technology adaptation is the availability of technical knowledge and practical skills throughout the supply chain, including among system designers, technology suppliers, extension services, craftsmen, and farmers.
She said limited expertise among farmers and inadequate public extension services are the key constraints to small-scale irrigation development.
“Irrigation equipment and support services are costly for smallholders. A major constraint on the expansion of the small-scale irrigation market is the gap between smallholders’ capital needs and the availability of loan products,” she said.
Her greatest challenge in the implementation of the project has been moving the solar panels from one farm to another.
But through partnerships, her company has invented an electric cart (e-mkokoteni), which is used to move solar panels from one area to another in large farms.

Linda Kamau’s model farm in Gachuriri village, Mbeere South, Embu County. [Patrick Vidija, Standard]

The panels are large, measuring one metre by two metres and reinforced by angle lines each weighing 25kg.
To get a market for their crops, they have partnered with several vegetable oil processing companies for the off-take of sunflower seeds after harvesting.
In 2019, Ms Kamau enrolled for the YALI programme, which is sponsored by the American government and hosted at Kenyatta University.
She said she is part of the alumni network where information on available opportunities is shared.
Ms Kamau revealed that she applied for a transformational fund grant that has seen her company improve on technology.
“The YALI alumni network gives us credibility and confidence to look for additional funding. The networks I have made have been helpful and especially the feeling of being in a community of people doing something that you want to associate with,” she said.

Linda Kamau’s model farm in Gachuriri village, Mbeere South, Embu County. [Patrick Vidija, Standard]

“For my fellow youth across the country, you do not have to always go to employment, venture into agripreneurship and look for partners to support,” she added.
She said many youths, however, take on the venture alone and give up so easily when they run out of ideas.
“Do not be afraid to ask for help. Look for mentors to guide you on best practices so that in case you run out of ideas, they will be there to hold your hand,” she said.