Interesting Things with JC #1201: "Glycine – The Sleep Boosting Secret in Your Soup" – The key to better sleep might not be melatonin but glycine, an amino acid found in bone broth. It helps lower body temperature, calm the nervous system, and improve deep sleep—without side effects.

Ref - Yamadera, W., Inagawa, K., Chiba, S., Bannai, M., Takahashi, M., & Nakayama, K. (2007). Glycine ingestion improves subjective sleep quality in human volunteers, correlating with polysomnographic changes. Sleep and Biological Rhythms, 5(2), 126–131. https://doi.org/10.1111/j.1479-8425.2007.00262.x