Participants
Sample of firefighters from 8 fire departments in 5 counties of the San Francisco Bay Area, who were invited to participate in a quality improvement program initiated by their department between September 2018 and December 2019. Those whose work schedule overlapped with the FireFlex yoga sessions were eligible to participate.

Description
FireFlex Yoga is a manualized, structured yoga program developed specifically for firefighters by one of the authors (Shannon McQuaide) in 2014.

Results
76 firefighters participated in the study. Both total FMS and MAIA scores improved statistically significantly. The strongest performance improvement was seen in trunk stability. The mean FMS score improved from below 14 to 14 and higher indicating a decrease in the risk for injury.

Discussion
Firefighters are at increased risk for on-the-job fatality and injuries, and mental health conditions such as PTSD, depression, and burn-out. The results of our quality improvement study indicate that the firefighters enrolled in these classes improved their overall performance on the Functional Movement Screen, an objective observer-based functional assessment tool.

Conclusion
Participation in the 10-class FireFlex yoga program designed for firefighters appeared to improve their observed movement function and self-reported bodily awareness. Although this quality improvement study was conducted without a control group and causal inferences are not possible, improvements were statistically significant and clinically meaningful.