Читать книгу Sleep: The secret to sleeping well and waking refreshed - Prof. Idzikowski Chris - Страница 76

Despite the well-known risks of smoking, this still remains a major problem – mostly due to the highly addictive nature of nicotine itself, which can make it extremely difficult for habitual smokers to stop. Withdrawal symptoms can begin quickly – often within a few hours of the last cigarette – leading to sleep disturbances. The brain’s nicotine receptors respond very rapidly to the lack of nicotine, which is why for habitual smokers the first cigarette of the day can bring the most relief, even though smoking in the night can cause disrupted sleep.