Please think back to the past you were ill.
Most people had to take time off a regular work, right?
Consequently, you were feeling ill on holiday (such as stress out while relaxing outside your workplace).
There are a number of symptoms; for instance, headaches, muscle pain, fatigue, colds and flus.
To simply manage 'Leisure Sickness' you may attempt to learn how a work-friendly environment through having a nice interpersonal skills happens in between two situations: travelling out Vs working in.
In my opinion, relaxation with positive thinking initiates calming your mind, don't u think?
Hoping Thai people won't get much on this kind of sickness na krab.