https://www.cnet.com/news/twitters-jack-dorsey-appears-on-anti-vaccine-fitness-personalitys-podcast/

On Tuesday, Greenfield wrote that he and the social media CEO chatted about "advanced stress mitigation tactics, extreme time-saving workouts, DIY cold tubs, hormesis, one-meal-a-day," and other topics.

"Thanks Ben! Great conversation, and appreciate all you do to simplify the mountain of research focused on increasing one's healthspan! Grateful for you," Dorsey wrote in response.