found capture at 20170918014104 Sitemap 5. Nutrition affects your fitness to a great extent. So you need to eat a diet that has the nutritional ability to make you fit. Your diet should be a balanced diet consisting of good fats, natural carbohydrates and lean proteins. Seeds and nuts like sunflower seeds, almonds and walnuts are the main sources of good fats. Veggies and fruits are the main sources of natural carbohydrates. Red meat, chicken, poultry, fish are the main sources of lean proteins. Nutrition-related fitness tip is one of the most popular fitness tips.