I recently started doing smoothies once a day. I take strawberries, blueberries, banana, plain yogurt, watermelon, and a low calorie juice like cranberry, strawberry banana. Everything is fresh fruit. But my question should I be adding in more to this like a protein powder? I've thought about a powder that helps you burn more fat because I've also started walking in the mornings for 40-60 minutes. I'm trying to lose about 20-30 pounds but also for my own mental physical emotional health. Thank you for your time I look forward to hear any feedback. Anything I'm looking for to put in these smoothies need to be natural, I'm sensitive to a lot of things.