sleep hygiene Circadian Reboot | E21 Richard Syrett Interviews Pam Killeen about the War on Sleep PamRichard Syrett interviews Pam Killeen about the modern epidemic of sleep deprivation and its impact on health. Circadian Reboot | E10 Dr. Vanessa Ingraham Discusses The Health Benefits of Sunlight PamPam Killeen speaks with Dr. Vanessa Ingraham about the profound impact of circadian rhythms and sunlight on health.