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My resting heart rate went up a little (enough for my Oura ring to notice) and my perceived effort during exercise was higher during the 3-4 days of highest effectiveness
Research-grade GHK-Cu should have batch-specific Certificates of Analysis showing third-party HPLC purity testing and mass spectrometry molecular identity confirmation
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Observed changes include a potential upregulation of IGF1 and NFB, while variations in telomere-related enzymes such as telomerase and tankyrase have also been noted
BabaYInagakiSNakagawaSKanekoTTakiharaT.Effects of L-theanine on cognitive function in middle-aged and older subjects: a randomized placebo-controlled study
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