The COVID-19 pandemic, in which we are still immersed, has had important health consequences worldwide. One of these is the number of people suffering from post-COVID syndrome. One of this week's articles is a review of dietary and physical activity recommendations for this type of patient. It recommends following a ketogenic diet followed by a transition to a Mediterranean diet, combined with a physical activity program. In both diets the main contribution of fat comes from olive oil, being one of the protagonists as it is rich in antioxidant, anti-inflammatory, and immune-modulating substances, such as polyphenols.