Monday syndrome: It refers to symptoms such as dizziness, chest tightness, abdominal distension, loss of appetite, body aches, and inability to concentrate due to excessive consumption of energy to deal with things outside of work on weekends.
Monday syndrome can be seen in people who have a busy and tiring weekend, followed by having to go back to work on Monday. This is exemplified by Xiao Li's experience of climbing and traveling during the May Day holiday and feeling exhausted when he returned to work.