Participants (n=15) will undergo 30 minutes of self-administered 1-channel (ECG) physiological monitoring at home using the Mindfield eSense Pulse twice a week for four weeks (eight sessions in total). The biofeedback training session will be conducted using the eSense Pulse smartphone application. Participants will receive further instruction explaining how physiological information will be displayed and used as a means of training to induce a relaxed state while receiving real time feedback. Participants will be instructed on using controlled breathing to assist with reaching this relaxed state. Prior to each training session, the Study Coordinator will meet with the participant via Zoom to virtually assist with setup. Following each training session, participants will respond to questionnaires over the phone.

Participants (n=15) will undergo 30 minutes of self-administered 1-channel (ECG) physiological monitoring at home using the Mindfield eSense Pulse twice a week for four weeks (eight sessions in total). Participants will be provided with the following instructions: "You will be monitored with this equipment for 30 minutes. During this time frame, please try to limit movement and conversation as much as possible." Prior to each training session, the Study Coordinator will meet with the participant via Zoom to virtually assist with setup. Following each training session, participants will respond to questionnaires over the phone.

30 minutes of one channel (ECG) physiological monitoring with Mindfield eSense Pulse.

Average LF (ms2)

The Depression Anxiety Stress Scale-21 (DASS-21) is a self report instrument designed to measure core symptoms of depression, anxiety, and stress. Each of the three DASS-21 scales contains seven items, divided into subscales with similar content. Scores for depression, anxiety, and stress are calculated by summing the scores for the relevant items. Items are rated on a scale from 0 (did not apply to me at all) to 3 (applied to me very much or most of time), with higher scores indicating more depression, anxiety, and stress.

The Subjective Units of Distress Scale (SUDS) is a single-item self report instrument designed to measure the intensity of feelings and other internal experiences such as anxiety, anger, agitation, stress, or other painful feelings. A scale of 0 to 100 will be used to measure the subjective intensity of disturbance or distress experienced by the participant. A higher score indicates greater distress.

A list of self-reported symptoms will be used to track any new symptoms requiring medical attention that emerge during the course of the study.

The Brief Pain Inventory (BPI) is one of the most widely used tools to assess pain. For this study, the four pain severity items will be used to assess worst, least, average, and current pain.