For example, bench press is divided into three angles. A bigger gym will give you a line. Barbells can be divided into one meter two, one meter five, one meter eight, two meters two Olympic bars, curved bars, shaped bars and so on. Less aerobic, general treadmills, exercise bikes, spinning bikes, rowing machines, treadmills, elliptical machines. Although there are so many anaerobes, in general, there are only twenty or thirty commonly used ones. With dumbbells and barbells, you can practice anywhere you want. Besides, equipment is the second. You don't need too much equipment to practice like Schwarzenegger (but you must have extraordinary talent). A good figure can be exercised by running, and a pair of dumbbells with adjustable hands is enough to have beautiful muscles. The key is whether you can persist. If you can do it for ten years, kill me if you can't practice it.