I dont know if somebody has already spoken about glycine here on this thread.
And in the gym where I go, nobody knows anything about it. I already knew that the fitness industry is stuck in stupidity. But glycine could be one of the most important and most useful food supplement, for strength, sleep quality and longevity.
There are tons of papers, trials and animals experiments on the subject. Therefore I take 5 gr glycine everyday before sleeping.
We, modern humans are glycine deficient, we dont eat anymore the bones , the cartilage and the skins of the animals we eat.
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https://journals.physiology.org/doi/abs ... .132.3.578
Alexander S. Chaikelis. THE EFFECT OF GLYCOCOLL (GLYCINE) INGESTION UPON THE GROWTH, STRENGTH AND CREATININE-CREATINE EXCRETION IN MAN. American Journal of Physiology. Published 31 March 1941 Vol. 132no. 578-587.
https://pubmed.ncbi.nlm.nih.gov/23835111/
https://onlinelibrary.wiley.com/doi/ful ... jcsm.12780
https://onlinelibrary.wiley.com/doi/ful ... 07.00262.x
YAMADERA, W., INAGAWA, K., CHIBA, S., BANNAI, M., TAKAHASHI, M. and NAKAYAMA, K. (2007), Glycine ingestion improves subjective sleep quality in human volunteers, correlating with polysomnographic changes. Sleep and Biological Rhythms, 5: 126–131.
https://pubmed.ncbi.nlm.nih.gov/21795440/
Glycine and aging: Evidence and mechanisms
https://pubmed.ncbi.nlm.nih.gov/37004845/
etc, etc, etc ....................
https://pubmed.ncbi.nlm.nih.gov/8613061/
it is also useful for the alcoolic people and their liver......