For ten years, a Catalan yogurt brand has used the slogan "It all starts within" to highlight the nutritional benefits of consuming their products. And it's true, yogurts are fermented foods, and eating them improves your gut microbiota, making it strong and thriving, like a dense, green forest. The denser the microbiota, the better, because viruses won't be able to penetrate it and, therefore, won't harm your gut. The good news is that we could have carried out the same campaign with olives from our olive groves. Olives, like yogurts, kefirs, cheeses, gherkins, pickled foods, and pickles in general, are fermented foods and, therefore, provide billions of active bacteria to our bodies.