I just quit smoking cold turkey. Why am I so tired?
While sleepiness doesn't affect everyone, it does for some. Why? Nicotine, the addictive substance in cigarettes, acts as a stimulant. It affects your brain by boosting the release of chemicals, including noradrenaline, dopamine, and acetylcholine, which enhance alertness and reduce feelings of fatigue. These chemicals, before you started to smoke,…