1. Who Suffers from high blood pressure, high cholesterol, high blood sugar and other symptoms do not use
2. People with severe heart disease do not use
3. People with family genetic history, asthma and epilepsy do not use
4. Women can not use during menstrual period
5. Too hungry or too full do not use
6. Do not use during pregnancy, but can use during lactation
7. donot use with  large wound
8. donot use after drinking
9. donot use  within three months after the surgery or within 100 days of fracture, and donot use within 15 days of cesarean section.
10. People with low back pain need to use it during sitting
11. the therapist should drink water when taking a bath, light brown sugar water for people with low blood sugar, light salt water for those with poor gastrointestinal
12. Keep warm after bath

13. Pay attention on ventilation

Five correct spa postures

squat
Squat with your legs slightly open, let the bubbles beat the lymph glands in the perineum and inner thighs for about two minutes, which will greatly help the blood circulation of the reproductive system and lymphatic drainage. 

sit
The legs are bent, the soles of the feet are flat, and the upper body is protruding forward. You can tap various acupoints on the soles of the feet and massage the soles of the feet to activate the muscles and bones.

lie
Such as kneeling posture, single kneeling or double kneeling can be used. The chest, abdomen, and buttocks can be slapped on the edge of the bathtub with hands, which can strengthen the activation of internal organs (such as stomach, liver, intestine, bladder, anus). 

side liying
Lying on the side at 45 degrees, strengthening the massage on both sides of the body, helping the kidneys and lymph glands to move, is a great boon for sculpting the figure and beautifying the curve. 

lean
Lower the supine position as much as possible, massage and pat the cervical spine, shoulders, spine and other parts to promote blood circulation, enhance cell hematopoietic function, and help decompression.