1. Prepare your fruit: Cut your peach and remove the core. Make small chunks. Next slice your lemon in half. Remove the peel off your banana, and you're ready to go!
2. Put all of the fruit (except the lemon) and your yogurt into the blender. Blend until all chunks are gone. (Tip: if you leave the peel on your peaches, blend a little longer.)
3. Next, squeeze the lemon juice from half of your lemon, and mix in your smoothie mix. Again, blend.
4. Finally, add the next half of the lemon with your sweetener, blend until smooth.