10 Foods That Improve Overall Fitness Results. Do you want to maximize fitness results? The key to getting the most out of each workout plan is making sure you are giving your body the nutrients it needs. This is especially true if you are doing weight lifting exercises. In order to build new muscle, your body needs plenty of protein, and choosing the right types of proteins is important. Otherwise, you will find yourself taking in far too many calories.As important as protein is, you can’t forget about vitamins and nutrients. Sure, supplements are an easy way to get your daily vitamins, but they're not nearly as effective as getting the same vitamins and nutrients from your foods. Your body will also absorb nutrients better when you eat them with food. Also, foods that are high in fiber take more energy to digest, thus burning calories when you eat them! Choosing nutrient-packed foods will help you get the most bang for your buck (or calorie).Most importantly, you cannot forget about water. Water is an extremely important part of your body’s functions because it helps flush out toxins and burn fat. Contrary to how it might seem, increased water intake can actually help reduce fluid retention.Whether you have started a new workout routine, or are a fitness veteran, here are some vitamin and protein-rich foods you will want to start incorporating into your diet.