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YK-11: How It Differs from SARMs, the Follistatin Mechanism and State of Evidence
YK-11 is sometimes grouped with RAD-140 and LGD-4033 as another SARM. That comparison is misleading on two levels, structural and mechanistic, and this distinction is the central theme of this article.
Marek Wawrzyk -
Fat Burner Ranking 2026
The lists of "fat burning" substances have one common drawback: it is not known how they were ranked.
Marek Wawrzyk -
Nootropic supplements for students – what to choose?
The exam period regularly increases interest in substances that are expected to provide better mental performance.
Marek Wawrzyk -
Peptides in cosmetics – what are they, and what is their function?
Peptides have become a permanent element of cosmetic formulations, and claims that are difficult to substantiate have arisen around them.
Marek Wawrzyk -
Tirzepatide vs. Semaglutide – Which Is Better for Weight Loss?
This article compares the pharmacology of two incretin molecules using evidence from registration trials.
Marek Wawrzyk -
Strength Training – how many reps to do for mass?
The question about the "optimal repetition range" is one of the most frequently asked questions in the gym and at the same time one of the questions to which the answer in the literature turned out to be different from the common belief.
Marek Wawrzyk
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