MARBELLA CLUB

SURF AIR, a Californian start-up, has a novel business model: for a monthly fee you can fly with the airline as much as you want. Is buffet-style air travel the wave of the future? JetBlue and Sun Country Airlines have both already tried offering all-you-can-fly passes, but so far no carrier has built its business model exclusively on a buffet plan. The idea isn't bad, but some scepticism is warranted. At $790 a month, Surf Air's flying plan will probably only appeal to business travellers who often go to the same places and rich Californians in long-distance relationships. Will that customer base allow Surf Air to make a profit? Maybe: 20m frequent flyers jetted between San Francisco and Los Angeles in 2011, according to the company's numbers. The airline plans to launch with service between Palo Alto, Monterey, Santa Barbara and Los Angeles, but it still needs to secure regulatory approval, according to a company press release. Frequent flyers make up a huge portion of the business-traveller population, and almost every airline relies on business travellers to get (and stay) in the black. There is surely some group of private-jet-sharing business travellers who might be attracted to an all-you-can-jet airline as a cheaper alternative. A lot will depend on how many flights and how much convenience Surf Air can offer, and how quickly it can expand service. The company's promises certainly seem attractive: [Surf Air will offer] its members 30-second booking and cancellations, travel to and from uncongested regional airports, and an easy arrive-and-fly process with no hassle, no lines and no extra fees. It's easy to make promises, though. It's much harder to run a profitable airline. As Gulliver often notes, the American airline sector overall has never really made any money—in fact, total earnings over the entire history of the industry are minus $33 billion. That, of course, suggests that existing airlines might be doing it wrong. Maybe all-you-can-fly really is the way to go. It's at least worth a shot. I'll be eager to see what people think of the final product—assuming regulators give the go-ahead.

It evolved in humans along with intelligence to make them more adept at avoiding danger. A study of 42 people found the worst sufferers of a common anxiety disorder had a higher IQ than those whose symptoms were less severe. Scientists say their findings published in Frontiers in Evolutionary Neuroscience, suggest worrying has developed as a beneficial trait. Psychiatrist Professor Jeremy Coplan, of SUNY Downstate Medical Centre in New York, and colleagues found high intelligence and worry are linked with brain activity measured by the depletion of the nutrient choline in the white matter of the brain. He said: "While excessive worry is generally seen as a negative trait and high intelligence as a positive one, worry may cause our species to avoid dangerous situations, regardless of how remote a possibility they may be. "In essence, worry may make people 'take no chances,' and such people may have higher survival rates. Thus, like intelligence, worry may confer a benefit upon the species." The researchers made the discovery by monitoring activity in the brains of twenty six patients with generalized anxiety disorder (GAD) and eighteen healthy volunteers to assess the relationship between IQ, worry and the metabolism of choline. In the control group high IQ was associated with a lower degree of worry, but in those diagnosed with GAD it was linked with more. The correlation between IQ and worry was significant in both the GAD group and the healthy control group. But in the former it was positive and in the latter negative. Previous studies have indicated excessive worry tends to exist both in people with higher and lower intelligence, and less so in people of moderate intelligence. It has been suggested people with lower intelligence suffer more anxiety because they achieve less success in life. Worrying has also been shown to lessen the effect of depression by countering brain activity that heightens the condition.

Dieters often dismiss them because of their high fat content, but research suggests that snacking on nuts can help keep you slim. A study found that those who consumed varieties such as almonds, cashews and pistachios demonstrated a lower body weight, body mass index (BMI) and waist circumference compared to non-consumers. They were also at lower risk of developing heart disease, type 2 diabetes and metabolic syndrome. Experts are now recommending a daily intake of 1.5 ounces, or three tablespoons of nuts as part of a healthy diet. Lead researcher Carol O'Neil, from Louisiana State University, said: 'One of the more interesting findings was the fact that tree nut consumers had lower body weight, as well as lower body mass index (BMI) and waist circumference compared to non-consumers. 'The mean weight, BMI, and waist circumference were 4.19 pounds, 0.9kg/m2 and 0.83 inches lower in consumers than non-consumers, respectively.' In the study, published in the Journal of the American College of Nutrition, researchers compared risk factors for heart disease, type 2 diabetes and metabolic syndrome of nut consumers versus those who did not consume nuts.