Eat fatty fish twice a week.
Well it’s good advise (ensure you choose sustainable options), and salmon isn’t your only choice. Mackerel, herring and sardines are also great options. I love sardines but if they aren’t you’re thing you can replace the sardines with canned or fresh, chopped salmon.
If you are vegetarian/vegan, make sure you include good sources of plant based omega 3 fats in your diet: flaxseeds, walnuts and chia seeds are great options!