We have sinuses in our heads which we ignore when healthy, but which are a cause of suffering during sinus infections. You may be surprised to learn that millions of all sorts of microbes, both good and harmful, normally live...

We have sinuses in our heads which we ignore when healthy, but which are a cause of suffering during sinus infections. You may be surprised to learn that millions of all sorts of microbes, both good and harmful, normally live...
Exercise has a beneficial effect on the health of your gut microbiome.
Recent research shows that exercise and physical activity increase the numbers and types of good bacteria that live in the gut, and decrease harmful bacteria.