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.

If I Know What To Do .... Why Don't I do It? With Carly Taylor
06:35

Understanding Your True Identity with Dr Jeremy Thompson
52:52

How Marcus Aurelius Managed His Mind And What We Can Learn From It by Carly Taylor
11:02