1 cup fresh spinach
1 beet, peeled and cut into quarters
1/2 cup plain Greek yogurt
1/2 cup frozen unsweetened red raspberries
1/2 cup frozen blueberries
1/2 cup ice cubes
4 slices cucumber
Blend spinach, beet, yogurt, raspberries, blueberries, ice cubes, and cucumber together in a blender until smooth.