This is a prospective, single group, self-controlled study to evaluate the clinical and molecular impact of continuous in-home resonance-based electromagnetic field (EMF) protection device usage in healthy individuals.

Inclusion Criteria:

• Any sex, gender orientation, and ethnicity
• Between ages 30 and 70
• Must be willing and able to participate in venipuncture, health history and clinical assessments, passive monitoring (Oura ring), and continuous in-home Blushield device usage

Exclusion Criteria:

• Significant change in diagnosis and/or treatment of major illness or injury within 2 years prior to screening, e.g., diabetes, cancer, cardiovascular disease, psychiatric condition 2. Any ongoing immune system concerns or immunodeficiency disease
• History of any viral illness in preceding year
• Body mass index (BMI) > 35 kg/m2
• Presence of active infection
• Any other illness, disorder, alcohol or chemical dependence that in the opinion of investigators would render study participation unsuitable
• Unable or unwilling to provide required biological sample
• Unable or unwilling to avoid pregnancy during study period