The difference comes down to which peptide they chose, how they dosed it, and whether their protocol actually matched the biology of abdominal fat
Where this therapy tends to matter most is consistency
Enhanced Gln metabolism not only maintains the redox state of tumor cells and decreases their sensitivity to radiation but also sustains CSCs by regulating -ketoglutaric acid (-KG)-dependent chromatin-modifying dioxygenases

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Another benefit of caffeine appears to be a change in pain perception
If you're using retinoids or AHA/BHA products, consider alternating days initially