"Create a high-protein Greek yogurt breakfast bowl recipe with 200g plain full-fat Greek yogurt, 30g fresh blueberries, 20g chopped walnuts, 1 tsp ground cinnamon, and optional 5g chia seeds. The recipe should be anti-inflammatory, no added sugar, high in omega-3 from walnuts, rich in polyphenols from berries, and protein-rich. Style the recipe for German baby boomers (60+). Include simple, clear instructions suitable for beginners. Use metric units."