The number of private jets operating around the world has more than doubled since 2000, tracking closely with the global rise in billionaires. Now private airlines are coming up with new ways to get customers hooked. Here's a look at the rise of the $40 billion industry. | Business Insider

The high-flying, jet-setting, king of private aviation, Mr. Steve Varsano, has just shared a glimpse inside his latest addition at @thejetbusiness. Installed right in the heart of his London office is the ZEUGMA hyperbaric chamber (2.4 ATA), custom-built in a Union Jack edition and now officially part of his daily routine. Known worldwide for his mastery of private aviation, Steve is equally committed to health optimization, longevity, and biohacking. That intersection is exactly where this coll