A source of healthy fats and omega-3s, hemp seeds will also add protein. One 60-calorie tablespoon offers 3.3 grams of protein, 0.8 grams of omega-3s (the daily recommendation is 1.1 grams), 0.7 grams of fibre, and has just 0.7 grams of carbs. Also worth noting, hemp seeds offer all nine essential amino acids, making it a complete protein, so it's a great way to get some healthy, plant-based protein into your smoothie if you're not a fan of protein powder. Try hemp seeds in this banana blueberry hemp seed smoothie.