Hardcore tech execs are meeting their match: the limits of the human body

Getty Images; Alyssa Powell/BI A string of tech execs have cited health problems in their resignation announcements. Tech's culture of perks and job security has been eroded by mass layoffs and the fear of AI replacement. The industry attracts people who give 110% to their work, but it seems they're reaching their limits. In tech's hardcore era, some execs are facing an obstacle they can't outsmart: the limits of their own bodies. On Monday, Lilian Weng, the cofounder of Thinking Machines…