Epigenetics again

At the moment everything seems to be about  epigenetics, mitochnodria or the microbiome.

Here is one about epigenetics - turning genes on or off:

Scientists at the University of California, San Francisco (UCSF) have identified nearly 200 genes in the healthy prostate tissue of men with low-grade prostate cancer that may help explain how physical activity improves survival from the disease.

Vigorous exercise linked to gene activity in prostate