More suitable for these types of people:
Staying up late and being a mental worker: Long term overtime and exam preparation can lead to dizziness, poor attention, and poor sleep.
Sports fitness population: Muscle soreness after exercise and a desire to recover quickly.
Sub healthy population: chronic fatigue, poor complexion, and lack of energy.
Middle aged and elderly people: with decreased heart and lung function, used for daily health care and improving oxygen supply throughout the body.
High altitude sickness population: Headaches, fatigue, insomnia before and after entering high altitude can help the body adapt to low oxygen.
The following groups of people are not recommended to use it or need to consult a doctor first:
Untreated pneumothorax, severe pulmonary bullae, severe emphysema
Poor blood pressure control (systolic blood pressure exceeding 160)
Severe heart disease, heart failure, arrhythmia
Acute glaucoma, ear diseases, or unhealed tympanic membrane perforation
Pregnant women, infants, severe anemia, diabetes, etc., ask the doctor first
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