A study of people 65 and older found benefits for cognitive function among those taught deep, slow breathing. This technique can inform brain health by affecting the vagus nerve, which regulates relaxation and stimulates the parasympathetic nervous system.
Research has shown that purposeful breathing techniques can improve cognition. A 2017 study found alternate nostril breathing increased alertness and motor learning, while a more recent study found deep slow breathing improved cognitive function in seniors.
Exercise is also essential for brain health. According to Art Kramer, director of the Center for Cognitive & Brain Health at Northeastern University, simple aerobic exercise can improve breathing, boost mood, and enhance sleep.
Kramer recommends 150 minutes of moderate to vigorous exercise per week for individuals over 50, which is not achieved by most people. However, taking short breaks to breathe purposefully can support brain health.
Source: https://www.stlamerican.com/your-health-matters/purposeful-breathing-improves-cognition-at-all-ages