People with insomnia will regularly find it hard to go to sleep, can wake up several times during the night and lie awake at night.
The NHS says: “Most people experience problems with sleep in their life. In fact, it’s thought that a third of Brits will have episodes of insomnia at some point.”
Caffeine and alcohol can stop you falling asleep and prevent good quality sleep. Therefore, it is recommended that people cut down on alcohol and avoid caffeine close to bedtime.
Circadian rhythms are physical, mental, and behavioural changes that follow a 24-hour cycle. These natural processes respond primarily to light and dark and affect most living things.