1.People with heart desease or high blood pressure, or configured cardiac pacemaker.

2.Patients with acute inflamation, Asthma, deep vein thrombosis, thyroncus, cancer

3.People with hemorrhagic disease, trauma or who is bleeding

4.Pregnant women

5.Medical plastic parts, or parts with artificial in filling inside

6.People with metal inside the body (include metallic tooth)

7.Patient with skin inflammation or with edema

8.People with an abnormal immue system

9.Numb or insensitvie to heat