Please consult your doctor before use if you are any of the following persons:
- Children under 9
- Pregnant or postpartum women
- Persons with a pacemaker or implanted medical devices
- Persons suffering from diabetes or other sensory impairment
- Persons with open wounds, discolored areas or any part of the body that is swollen, burned, inflamed or where skin eruptions or sores are present
- Persons with increased or reduced sensitivity to heat
- Persons suffering from osteoporosis, weak bones, abnormal or curved spine or other acute pains
- Persons with injured massage areas
- Persons having received cardiac or visceral surgery
- Persons easy to get sprained or injured
- Persons feeling any discomfort (e.g. inflamed skin, redness, itching, etc.)