"What forms does sleep disturbance take?"

Researchers have discovered that, over the past two decades, on average the time spent asleep during the night has shortened by up to 30 minutes, whilst about 10% of the population suffer from sleep disturbance.

In most cases, people suffer from difficulty in going to sleep and from interruption in sleeping. Anyone one who takes more than half an hour in going to sleep is suffering from sleep disturbance. Those who suffer from sleep interruption usually go to sleep easily but often wake up during the night and have difficulty in going to sleep again. Anyone who takes longer than 30 minutes to go to sleep again is suffering from sleep interruption.