Engaging in short sessions of intense movement (such as 4 minutes of daily effort) stimulates the release of beneficial molecules by our muscles (myokines, including IL-6), which regulate inflammation, increase vitality, and whose benefits purportedly circulate directly through the blood.

noli's read

The concept of a "muscle pharmacy" is based on solid scientific foundations. A large observational study by Emmanuel Stamatakis's team (Nature Medicine, 2022) shows that approximately 4 minutes of intense daily effort are associated with a significant decrease in the risk of premature death. Furthermore, the dual nature of IL-6—a molecule linked to background stress but which regulates inflammation when released briefly through exercise—is well-documented by movement research. Regarding the blood-borne transfer of these benefits, rigorous experiments on mice (teams led by Tony Wyss-Coray in Nature, 2021, and Saul Villeda in Science, 2020) confirm that the plasma of active animals boosts the cognitive capacities of sedentary animals. Transposing this visual of "vitality transfusion" directly to humans is, however, an early extrapolation, as it has not been validated for our daily well-being. Overall, the evidence shows real benefits to short bursts of movement, even though the primary human study remains observational and does not demonstrate a direct cause-and-effect relationship.

the sources

1. 1Hoffmann C, Weigert C 2017
2. 2Stamatakis E et al. 2022
3. 3Stamatakis E et al. 2023