Heart or circulation issues (e.g. high/low blood pressure, DVT, varicose veins, blood thinners)
Spine, joint, or muscle concerns (injuries, chronic pain, implants)
Respiratory, metabolic, or neurological conditions (e.g. asthma, diabetes, epilepsy, neuropathy)
Skin conditions (cuts, rashes, eczema, infections)
Recent surgery, vaccination (last 48 hours), or illness
Cancer in the last 5 years