Gyms are generally large facilities, the ventilation function of windows is weakened to the extreme, and even the basic light transmission is replaced by a large number of decorative lights. If the location and setting of the gym are unreasonable, it will be more difficult for the gym converted from basement or semi-basement to meet the requirements of hygiene and ventilation. Moreover, some gyms' fitness equipment and public goods are not disinfected, and the fresh air system is the basic facility for gyms to protect customers' health.

Gym workers are highly mobile and have strong exercise intensity. They need to inhale a lot of oxygen and discharge a lot of carbon dioxide during exercise. Sweat and microorganisms on the surface of human body increase correspondingly during exercise. Without good ventilation, bacteria, viruses, pathogens and carbon dioxide in the air will accumulate, and the indoor air environment will be easily polluted, which will easily lead to the spread of diseases and affect the physical and mental health of bodybuilders.

Most of the items in fitness are aerobic exercise. If the air you breathe is low in oxygen, not only will the fitness effect be greatly reduced, but it will also bring side effects. Lauter's fresh air system can continuously purify and transport fresh and oxygen-enriched outdoor air indoors for 24 hours, and at the same time continuously discharge dirty indoor air, so that the air in the gym is always kept in a clean, oxygen-enriched and healthy state, so that bodybuilders can truly achieve the purpose of exercising and make their bodies healthier and healthier.