is common in the general population. It is not a disease , it is a symptom caused by hard to pass bowel movement.Constipation causes include diet , effects of medications , life style attitudes ,insomnia
etc. Hemorrhoids and anal fissures and irregular practice of toilet approach can also cause constipation.
As per your statement ,night duties can lead to increase the body heat and possible to shrink the bowel system. so that, to prevent constipation , take high fiber diet, frequent useage of greens , fruits, and adequate water systematically.
I advice you , DRINK 200 ml lukewarm water on empty stomach in the early morning and make walking exercise which can help to lubricate the bowel system.
A combination of Orange juice and Olive oil is more benificial in treating constipation.
Plain Orange juice or Grape juice . when taken empty stomach in the morning would be favorable.
Take Indian Senna powder with one glass of hot water every night before going to bed. It brings much needed lubrication required for constipation.