MOTS-c

Hard training is what makes your muscles release MOTS-c, and the signal fades once you rest. The weeks when training slips, after a short night or a long stretch at the desk, are the weeks your muscles get less of it. MOTS-c supplies that signal on the days your training doesn’t.

Researchers at the University of Southern California discovered MOTS-c in 2015, a peptide written in your mitochondria’s own DNA. In 2021 a study showed it rises sharply in human muscle after a cycling session. Most of what it does has been shown in animals; the first placebo-controlled trial of MOTS-c itself in people started in 2026. It is prescribed off-label and compounded for you.

Your clinician checks how your energy and training respond and asks for blood work if it is needed. When you stop, the extra signal stops; your muscles keep making their own MOTS-c whenever you train.

NAD+ is the coenzyme your cells use to make energy: the fuel supply. Glutathione is your body’s master antioxidant: the clean-up. MOTS-c is the signal that tells muscle to burn fuel: the switch. Three different jobs, so they can be taken together, and many men start with one. The choice is yours; your clinician reviews it.

A GLP-1 works on appetite: it signals fullness, so you eat less. MOTS-c works in muscle instead, on how fuel is burned, and in animal studies it left appetite alone.