The third day is a psychological and physical challenge, which is easily interfered by willpower and needs persistence. I will get used to it on the fourth day, and my body will become more relaxed, but there may be detoxification reactions such as fatigue, nausea and poor mental state.

It is suggested that the intake of water should be increased appropriately and light exercise should be carried out to help the body get through this difficult stage. It should be noted that crossing the valley is not a way to lose weight, but a way to keep fit.