Experienced fitness enthusiast and nutritionist here. While this is an overall well-balanced smoothie, consider swapping the ripe banana with a green one if you're looking to reduce simple sugars since ripe bananas have a higher sugar content. Plus, green bananas are a great source of resistant starch, which acts as …

Caffeine-free? Hmmm, that's something. Maybe could use it as a mixer for a healthier alternative to late-night Red Bulls and vodka. LOL