Inclusion Criteria:  Identified with one of 3 Post-Covid Syndrome (PASC) phenotypes at Mayo Clinic Rochester. Not pregnant by subject self-report at time of consent. Have the ability to provide informed consent. Have the ability to complete all aspects of this trial. Have access to an iPhone, iPad, or Android device. Have no contraindicating comorbid health condition which would interfere with the proper use of the Muse-SÔ system, as determined by the clinical investigators.  Exclusion Criteria:  Used an investigational drug within the past 30 days. Anyone that is not on a stable dose of medication for anxiety, depression or sleep. Currently (within the past 3 weeks) been practicing mindfulness training on a weekly/regular basis. Currently (within 3 weeks) has been enrolled in another clinical or research program which intervenes on the patients' QOL, or stress. An unstable medical or mental health condition as determined by the physician investigator.