That spirits often play a serious part in domestic disturbances and break up many homes we have had ample evidence.
But severe weather in the Northeast and other natural disturbances clouded the assessment.
The movements involved in walking or other physical disturbances can contribute to the problem.
There is, however, no increase in psychiatric disturbances, criminal behavior or mental retardation.
Five people were reported to have been killed in disturbances during the second round.
Some 300 to 400 people were involved in disturbances.
They have been used in major disturbances or in civil disasters affecting public order and safety.
The army says 7 to 15 Palestinians were wounded in disturbances near a main road running below the hospital and another 4 were killed.
More than once in recent years the hospital has had to deal with a major influx of patients wounded in civil disturbances.
"Our training has mostly been in civil disturbances and riots," he said.