Bodily arousal occurs at high stress levels.
The cause of the stress may well be divided into two categories:
1) Psychological stress
As a result of the conflicts in the family or at work, death or illness in close relationships, financial difficulties or similar
2) Physical stress
As a result of physical illness in itself, too much work, too high consumption of alcohol, lack of sleep, low blood sugar or similar
Stress can cause many reactions such as irritability, insomnia, muscle pain, chest pain and nervousness.