Let's talk about the ultimate weight first: it is the maximum weight you can carry in an exercise, and you can do it 2-3 times.

Large weight and less group: generally speaking, it is not called large weight and less group, but large weight and less group (and the appropriate number of groups, generally about 4 groups). This is the training method of building muscles and explosive power (also called anaerobic training), which means that the weight of sports equipment needs to be about 85%-95% of the limit weight you can bear.

Small weight multi-group number: generally speaking, it is not called small weight multi-group number, but light weight multi-group number (generally about 5-6 groups). This is the training method of reducing fat and shaping (also called aerobic training), that is, training with about 30%-40% of the limit weight.