It must be effective. There was an example of tea recuperation in ancient China, which was recorded in Shennong Herbal Classic. We generally refer to therapeutic tea as medicinal tea, and the materials for making tea all contain traditional Chinese medicine ingredients, which have a good effect on health preservation. Moreover, there are many ways to recuperate from tea, and I can't tell you all of them here. . . I recommend you a website called Tea Health Network, where there are many introductions in this field. You can go and have a look. .