Probiotics, the healthy bacteria that improve digestion, were another big buzzword tossed around the expo. There were supplements, milks, and frozen treats. One of the most delicious probiotic sources I tasted came from Santa Barbara-based ProYo Frozen Yogurt. Each tube of this frozen yogurt offers 20 grams of milk protein plus live probiotic cultures. The product was developed when the founder was recuperating from a weight-lifting injury and had done lots of research about the healing powers of probiotics.