Mark Wahlberg wants to take on the longevity-startup crowd with an affordable gym concept

Mark Wahlberg has started companies of his own and backed plenty of others. But the gym he’s opening in December, he says, has him more excited than anything he’s done in his entire career. It also goes after a corner of the market where venture money keeps flowing: pricey, diagnostics-heavy wellness. Speaking with us at TechCrunch Disrupt in San Francisco on Thursday, the actor said the first Municipal Gym opens in December. It’s a 32,000-square-foot club outside Las Vegas with blood work, epigenetic testing, recovery gear, compression therapy, cold plunges, and a café that serves up protein muffins, among other things. He’s pitching it as the affordable alternative to the longevity clubs that charge tens of thousands of dollars a…