1, try not to open it. Generally speaking, the fitness environment of 25-32 degrees Celsius is most conducive to the secretion of adrenaline, which can bring better fitness effect. That is to say, if you feel a little hot during fitness, the fitness effect is the best at that time. Because you consume a lot of physical strength, you need to breathe a lot of fresh air and emit a lot of carbon dioxide. Especially in the gym, if there is no good ventilation and convection device, it will lead to the continuous circulation of exhaust gas in a limited space, which is unfavorable for exercisers doing aerobic exercise.

2. Fitness is a kind of exercise that can improve people's health and enhance people's physique. The exercise forms and methods of fitness need to be formulated according to the principles of human life science to promote people's physical and mental health, and unscientific excessive exercise will lead to human injury. The scope of fitness is very wide, and exercise is only one part of fitness. Besides exercise, there are many contents of fitness, such as writing, singing, doing housework and practicing yoga. Body-building exercises can adopt all kinds of unarmed exercises, such as all kinds of unarmed aerobics, rhythmic gymnastics, aerobics, all kinds of resistance movements, etc. You can also use a variety of sports equipment for various exercises, such as dumbbells, barbells, kettlebells and other weightlifting equipment, gymnastics equipment such as horizontal bars, parallel bars, ropes and poles, strength training equipment such as spring tensioners, pulley tensioners and rubber bands, and various special comprehensive strength training racks, as well as aerobic training equipment such as power bicycles, stair treadmills, flat treadmills and rowing machines.