Very Berry Beet Protein Power Smoothie. I'm a little obsessed with beets lately, but beets are really good for you! Beets contain Vitamin C and folate as well as many minerals our bodies need. Plus, they have fiber and a cup of beets only has around 60 calories. WIN. This gluten-free superfood smoothie is chocked full of good for you things like protein, berries, and beets. It's good for you and yes, it's delicious. Trust me, if you're on the beet fence, TRY IT!