The subjects in the StressEraser group returned the device. The time spent using the StressEraser and the total number of resonant frequency respirations were the feasibility measures. The StressEraser logged the date, time, and duration of use and the amount of resonant frequency breathing, which is the resonance between the respiratory and baroreflex rhythms, the two primary sources of cardiac stimulation. Acceptability was measured through a short debriefing interview.