Cocoa Strawberry, Banana, Pineapple Smoothie (Optional Protein)

1 cup skim milk, light soy vanilla milk, light coconut milk
1 banana
1 tsp cocoa powder
1/2 cup frozen strawberry
1/2 cup frozen pineapple ( or you can buy frozen mango, pineapple, peach and strawberry combo)
1 cup vanilla yogurt or vanilla Greek yogurt
Optional- 1 scoop protein powder (plain, vanilla, strawberry or chocolate)

Combine all in a blender