Breathing
Breathing involves slowing down and regulating our hearts, which then sends a signal to the brain that all is well. Breathing is the only autonomic activity that we can consciously control. It is a very ancient practice that has been used by religious and non religious groups for millennia. Breathing correctly has dramatic physiological and behavioral effects. Increasing the length of our exhale turns on the vagal brake to the heart, modulates our arousal, and allows our frontal lobes to function at their best. The key is teaching people to extend their exhale when they breathe. Just telling people to breathe, without teaching them the techniques, doesn’t really help.
Demonstration Video:
More Information:
安 Taming the Tiger, Waking the Possum 