When Danny Yeung sat down for dinner with soccer legend David Beckham, there was no agenda. Beckham wanted a product he could take every day without juggling a shelf full of pills. "If this product didn't work, David wouldn't use it—and neither would I," Yeung says. "We approached it like a biotech company," Yeung says. Yeung believes Beckham didn't just join because of a business opportunity, but because he believed in the science.