Inclusion Criteria:
* Mayo Clinic patients with a previously confirmed infection with the novel SARS-CoV-2 virus who have been seen in the Post COVID Clinic through GIM Integrative Medicine \& Health Section or approval by MAGPIES research group.
* Be able to participate fully in all aspects of the study.
* Have understood and signed study informed consent.
Exclusion Criteria:
* Lacking the capacity to consent.
* Prisoners and institutionalized individuals.
* Reports being currently pregnant, lactating, or are of child-bearing potential or are likely to become pregnant during the LLLT treatment phase and are unwilling to use a reliable form of contraception.
o Acceptable forms include:
* Hormonal methods, such as birth control pills, patches, injections, vaginal ring, or implants
* Barrier methods (such as a condom or diaphragm) used with a spermicide (a foam, cream, or gel that kills sperm)
* Intrauterine device (IUD)
* Total hysterectomy or tubal ligation
* Abstinence (no sex).
* Those patients that have implants that would prevent them from having a PET Scan.
* Patients that have claustrophobia.
* Have a known history of any condition or factor judged by the investigator to preclude participation in the study or which might hinder adherence.
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