Here is the study on sleep & the common cold.
For more info on sleep, check out podcasts 135 and 109 and podcast 18 does a deep dive into sleep hygeine.

Do you really need to watch your salt intake? The science is much more nuanced than Doctors think - Wisdom Wednesdays
11:39

When We Overthink What We Say With Carly Taylor
04:02

Navigating Mental Health Challenges with Graeme Cowan
48:12