Generally speaking, it is a big cycle of rest, that is, you practice all the muscles of your body in turn, take a day off, and let your whole body rest and relax. But the rest day depends on your own needs, usually after a particularly intense training and a particularly tired day.

For example, the common fitness cycle is the first day: chest, three heads, waist and abdomen; The next day: back, both ends, outside the waist; Day 3: Shoulders and legs. Then you usually put the rest day after the shoulder exercise, but if you focus on chest exercise and the intensity of that day is particularly high, you can also put the rest day between your chest and back.