Resistance training improves sperm quantity, quality, and volume by reducing inflammation and oxidative stress.

noli's read

The advice is based on a study published in 'Reproduction' (PMID: 29698651), which is an observational study conducted on men being treated for infertility. Researchers observed that regular physical activity, including muscle strengthening, was correlated with improved sperm parameters. It is important to note, however, that this is a correlation and not proof of direct causality, as the overall lifestyle of the participants plays a major role. The idea that exercise reduces inflammation and oxidative stress, thereby benefiting reproductive cells, is a plausible biological mechanism well-documented in the general scientific literature. However, stating this effect so affirmatively may be slightly exaggerated, as individual responses to exercise vary considerably. In sum, the link between moderate physical activity and reproductive health is supported by solid evidence, even though the optimal intensity and type of exercise remain to be determined.

the sources

No named source held this one up — that absence is part of the verdict.