Some people are concerned about the amount of sugar in fruity smoothies, but keep in mind that your body is getting those natural sugars the way nature intended--with lots of fiber and some protein to help it gradually absorb the energy it needs. That's very different from a bottle of soda, which contains lots of processed sugar and nothing to keep it from hitting your system like a ton of bricks. There's a reason dietitians encourage us to eat more fruit and consume less processed sugar.