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Severe energy deficits from extreme caloric restriction can potentially suppress reproductive function

Keep the morning fasted and delay carbohydrate intake until after any morning training if possible

And yes, this was done in rats, not humans

Advantage: Convenient, familiar, non-invasive Challenge: Peptides face proteolytic degradation in the stomach and small intestine Bioavailability: Estimated at approximately 38% based on comparative pharmacology (see below) Transdermal (Patch) Some researchers have explored transdermal patches to deliver peptides: Advantage: Avoids first-pass metabolism and GI degradation Challenge: Intact skin is a strong barrier to peptide penetration Feasibility: Not commonly available commercially

For your first order, you can order samples to check the quality