Andrew Huberman (Huberman Lab)

Andrew Huberman turned a Stanford neuroscience lab's worth of research into appointment podcast listening — two-to-three-hour deep dives on sleep, testosterone, light exposure, and cold exposure that somehow hold an audience the length of a feature film. The 'morning sunlight, cold shower, delay the coffee' protocol has been adopted by more people than could plausibly have read the underlying studies, which is both the appeal and the risk of the format: enormous reach, thin margin for error. Roughly 8 million subscribers trust him to get that margin right.