Many individuals experience a common sleep disruption known as being "tired but wired," where despite physical exhaustion, the mind remains alert, preventing sleep. This phenomenon is characterized by conflicting hormonal signals, with some indicating rest while others promote wakefulness, leading to symptoms like racing thoughts, heart palpitations, and restless legs.
Dr. Laura Bojarskaite, a neuroscientist and sleep researcher at the University of Oslo, emphasizes the critical impact of chronic poor sleep, noting that it affects nearly every bodily system and can increase the risk of conditions such as obesity, heart disease, and dementia.
Understanding the 'Tired but Wired' State
The "tired but wired" state is primarily driven by hormonal imbalances. Normally, the body's primary stress hormone, cortisol, decreases in the evening. However, factors like stress, anxiety, caffeine, artificial light, and worries about sleep itself can trigger excess cortisol production, signaling the brain that it is not yet safe to relax. Dr. Bojarskaite explains that the body may feel exhausted due to accumulated sleep pressure, yet the brain continues to receive alertness signals, resulting in hypervigilance and the tendency to replay conversations or anticipate future events.
Dr. Tom Chambers, a sleep medicine physician and chief medical officer at Theta Sleep, suggests that stress hormones may be more active at night due to the absence of daytime distractions. "During the day, your mind is occupied with other life things... When we then get into bed, it's quiet, you're in a dark room and there's no other external distractions," he notes.
Techniques to Encourage Sleep
Neuroscientists have proposed several exercises designed to help calm the mind and encourage sleep:
Brain Dump
This technique involves writing down all thoughts and worries on paper to clear the mind. James Wilson, a sleep expert known as The Sleep Geek, suggests that many people bring excessive mental and emotional alertness to bed. A "brain dump" can be performed after an evening meal or by keeping a pad and pen near the bed to jot down thoughts that arise, either before sleep or during the night. For those anticipating a busy period, creating a to-do list can be an effective alternative. A study published in the Journal of Experimental Psychology found that participants who spent five minutes writing a to-do list before bed fell asleep significantly faster than those who wrote about completed tasks. Researchers suggest this process allows the brain to recognize that tasks have been recorded and do not require constant mental rehashing during sleep.
Repetitive Sound
Dr. Chambers recommends silently mouthing a simple, non-stimulating sound, such as the word "the," repeatedly. This practice, he explains, can block the brain's language processing systems, which often fuel racing thoughts. By occupying these systems with a repetitive, simple sound, the mind has less capacity to engage in worries and anxieties.
Paradoxical Intention
Developed in the 1970s to combat insomnia, paradoxical intention involves doing the opposite of what one intends. Dr. Chambers advises against actively trying to force sleep, as it is a natural process. Instead, he suggests lying in bed with the lights off and consciously trying to stay awake. This mental effort can paradoxically lead to sleep by shifting focus away from the pressure to fall asleep. A review of 10 clinical trials published in the Journal of Sleep Research indicated that paradoxical intention significantly improved insomnia symptoms, outperforming other relaxation techniques like deep breathing.
Insomnia affects a substantial portion of the population, with an estimated 22 million people in the UK experiencing poor sleep according to NHS data. These scientifically backed methods offer practical solutions for individuals struggling with the "tired but wired" phenomenon.