166. Cortisol Mainly Plants Podcast 166. Cortisol Play Episode Pause Episode Mute/Unmute Episode Rewind 10 Seconds 1x Fast Forward 30 seconds 00:00 / 16:26 Subscribe Share RSS Feed Share Link Embed Ryan discusses what cortisol is, its key role in sleep, and how to regulate it. 165. Accept Everything, Expect Nothing 167. Protein