As with virtually all forms of medical treatment, there can be side effects to treatment by an osteopath. It is quite common to feel tired after a treatment; particularly for people who have been running on adrenaline, and whose body recognises, through the treatment, that it has a lot of work to do to resolve its problems. (Other people sometimes feel more energised after a treatment; it all depends.) Some people may also feel sore after a treatment, even when the treatment has been very gentle. This can happen for a number of reasons. In some cases, the patient’s body starts to move in different ways, and muscles get sore because they are now doing work which they haven’t for a while. In some cases, the path to you getting well may involve your body provoking an inflammatory reaction in some of your tissues; this can be temporarily unpleasant.