As the summer holiday season draws to an end, many people are complaining about post-holiday fatigue.
According to one job-search site, 81.3 percent of salaried workers are experiencing post-vacation blues.
The most common symptom is depression caused by the return to mundane everyday life. Other symptoms include decreased concentration at work and financial stress caused by holiday spending.
Experts say unbalanced biorhythms due to excessive drinking and changes in sleep patterns are to blame. Irregular biorhythms make people feel tired and weaken the immune system.
"Post-holiday fatigue is like Monday morning blues and people may mildly struggle returning to their daily lives. It may take one or two days to get back to the normal and regain a balanced biorhythm," said psychiatrist Sohn Seok-han. "Simply resting isn't the best way to tackle this. Light exercise can energize the body, and it's recommended that you adjust your workload so that you don't immediately return to an excessive amount of work."