2. A relatively large area.

3. The free weight training frame needs the protection of the touring coach. There are not many gyms with travel coaches now.

4. Worried about safety, don't buy it at all.

Now gyms generally reduce free weight equipment and increase aerobic exercise equipment, which looks very tall.

It is also a response to the idea of more so-called "China pseudo bodybuilders", or that aerobic exercise is supreme and tends to muscle training.

Even if you train, you don't practice your legs, let alone lift a barbell and squat.