This recipe is a great base (and my go-to green juice), but you should feel free to play around with different ingredients.
Adding the apple or pear will add some natural sweetness. It will also make this recipe non-compliant on Lifestyle and Performance, so choose to use apple or pear based on both your personal taste and your chosen nutrition level.
Recipe by Whole Life Challenge® at Essential Green Juice https://www.wholelifechallenge.com/essential-green-juice/