**Note**

<sup>1</sup> A word about methodology. In researching, we conducted a literature review using articles published from 2012 to 2021 utilizing the search engines PubMed and Google Scholar in order to find articles on Hatha Yoga and PTSD, Hatha Yoga and Anxiety, Hatha Yoga and Depression, Hatha Yoga and Immunity, Hatha Yoga and COPD, Hatha Yoga and Pneumonia, and Hatha Yoga and COVID-19. Articles were then filtered by sample size and clarity of methodology, with longitudinal studies and meta-analyses prioritized because of their higher level of statistical significance. If a study resulted in a finding that was not uncovered by other researchers, then the new findings were addressed. If a given study had a distinct method for administering experimental Hatha yoga, its intercalated yoga techniques were addressed. Finally, the contribution of the longitudinal meta-analyses studies to this research was determined by the duration of their time period as well as their unique findings.

#### **References**


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