Insomnia quite literally keeps you awake at night. If you have insomnia, you find it difficult to fall asleep or you awaken frequently, leaving you feeling tired and unrefreshed in the morning.
Lack of high-quality sleep can cause significant problems with cognitive function, making you fatigued and irritable. Insomnia also leads to difficulty concentrating, and memory impairment is common.
Lack of sleep can also hinder your ability to maintain a healthy weight, and it increases your risk of developing high blood pressure or mood disorders like depression.