@article{10_1007_s10484-025-09688-z,
  title = {Comparing the Effects of Square, 4–7-8, and 6 Breaths-per-Minute Breathing Conditions on Heart Rate Variability, CO2 Levels, and Mood},
  author = {Joshua Marchant and Inna Khazan and Mikel Cressman and Patrick Steffen},
  journal = {Applied Psychophysiology and Biofeedback},
  year = {2025},
  doi = {10.1007/s10484-025-09688-z},
  url = {https://doi.org/10.1007/s10484-025-09688-z}
}