Dump in the yogurt and between some and all of the juice depending on how you like the consistancy of your smoothie. I used 3/4 of the bottle I had which is like 6 ounces or something.

Blend. Make sure its good and mixed. I like to rock my blender back and forth as it goes to ensure a healthy mixture. Then pour into a glass and enjoy.
  
 
 Step 5:

My final product here looked like this:

For my money this drink can't be beat for good taste and good-for-you-ness. I would recommend against anything citrus not because its bad, but it changes the nature of the drink drastically and, well, im a bit of a purist. Enjoy!