Biorhythms Aren't Real, But 'Peaks' of Productivity Can Be

You know a theory is janky when even its Wikipedia page has “(pseudoscience)” behind its name in the title. That’s the case with so-called “biorhythms,” or periods of 23, 28, and 33 days that supposedly predict how mentally, physically, and actively on-point you’ll be on any given day. It’s all nonsense, but there are …