The transformative powers of breathwork and massages

Is it Placebo? Prior to last year, I did not believe in the transformative power of yoga, breathwork, and massage (I only do Zumba and water sports).  ...until I myself bawled, and felt anxious post-yoga in Cordoba, Spain, but much of those reaffirmed when I cried but don't know why after a deep tissue massage in Lombok, Indonesia earlier this year.  We all have pent-up stress and trauma stored within and these activities help you release them and step into your current flow.