Biodance is a discipline which is proposed as a path of personal growth and development with the goal of promoting individual well-being. The study has evaluated the specific effects of Biodance on various dimensions of well-being such as: psychological well-being, stress and alexithymia. There were 235 participants involved in this study, divided into three groups, the first is an experimental group and the two others are control groups. The experimental group Biodance, is made up of 96 participants who started a bio-dance course for the first time; 71 participants who started a dance course constitute the Physical Activity control group and the Sedentary control group, consisting of 68 participants, did not practice any physical activity. The data collection was done through three questionnaires filled out over two periods of time: at the beginning (pre-test) and at the end of the courses, which lasted for about 9 months (post-test). The scales used for the data collection were the following: the Psychological Well-Being Scale used to evaluate individual well-being, the Measure du Stress Psychologique to measure stress and Toronto Alexithymia Scale, to evaluate the alexithymia. The results highlighted that participants of the Biodance group, after one year of taking the course, show an improvement of their psychological well-being and a decreased of level of stress and minor level of alexithymia. However both Physical Activity and Sedentary control groups do not present significant variation between pre and post-test. To conclude, the results show that Biodance is indeed a practice to promote well-being and individual development.