Some people cycle once every three days, while others cycle once a week. Generally speaking, the shorter the training time, the more rest time we have. For example, the two-day cycle (that is, two days for the whole body and then one day off) means that we take one day off every two days. Similarly, a four-day cycle means that we train muscles in all parts of the body during three days of training, and then rest on the fourth day. Then cycle for three days. In other words, generally speaking, the shorter the cycle means that we have not completely differentiated from the body. For example, the four-day cycle of most people divides the body into three parts, with three heads on the chest and three on the shoulders; Back two heads; Abdominal muscles of leg. If it is a weekly cycle, we basically divide the body into five parts, or even six parts.