Consuming nicotine is also linked to raised alertness, euphoria, and a sensation of being relaxed.
Studies have shown that nicotine appears to improve memory and concentration. It is thought that this is due to an increase in acetylcholine and norepinephrine. Norepinephrine also increases the sensation of wakefulness, or arousal.
Nicotine results in increased levels of beta-endorphin, which reduces anxiety