Can that downward dog make you happier?—New studies suggest it can. The first study by Dr. Nina Moliver (done as her thesis) and published in the Globe and Mail looked at the relationship between practicing yoga and happiness. Dr. Moliver studied more than 200 women who had practiced for more than 50 years and found that the more participants practiced yoga the greater they rated their levels of psychological and physical well-being. An additional study published in the Annals of the New York Academy of Sciences, looked at a group of female PTSD patients who completed eight hatha yoga classes. The results showed significant more improvement in PTSD symptoms than the group that had eight sessions of group therapy. “This is a really promising area that we need to examine,” Rachel Yehuda, a professor of psychiatry at the Mount Sinai School of Medicine and the PTSD program director at the James J. Peters Veterans Affairs Medical Center in the Bronx, told Yoga Journal. Studies have shown about one in five soldiers returning from Iraq have PTSD and other mental health problems and yoga could make a big difference.