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Sleep

Why is it so difficult to fall asleep when you are overtired? There is no one answer that applied¹ to every individual. It is possible to feel "tired" physically² and still be unable to fall asleep, because while your bocdy may be exhausted³, you do not feel sleepy. It is not so easy to simply "turn off".

Lack of sleep complicates⁴ matters even more. Experts say adults need at least seven to eight hours of sleep a night to function properly. When you get less sleep than that on consecutive⁵ three nights, you begin to accrue⁶ four "sleep debt". As sleep debt increases your body experiences a stress response. Now a vicious cycle has been created: You experience the feeling of being more and more tired, but your body is increasingly stimulated⁷. "Power sleeping" for more hours on weekends is only a temporary solution. There is no substitute for getting a good night's sleep on a regular basis.