Your digestive system is home to trillions of bacteria, some are beneficial and some are harmful. Unbalanced diet, high stress, less sleep, and lack of daily exercise can all put your digestive system out of balance, which then gives harmful bacteria the opportunity to multiply. As a result, you may suffer from poor digestion or weak immunity. Drinking Yakult daily may help balance your digestive system. For over 80 years, people around the world have been making Yakult a part of their daily diet.