Smoothies are a great way to pack a lot of nutrition into a cup. Try this version for a morning brain wake-me-up, or as an afternoon brain boost! Bustling with antioxidants, fibers, and healthy fats, this simple recipe will nourish your busy day. Soaking the walnuts makes them blend to a creamier texture and improve their digestibility. You can soak them overnight in a covered container in the fridge, so they will be ready in the morning.