How does nicotine work?https://www.youtube.com/embed/PqeEGpCQhBA&t=1sHow does nicotine work?How does nicotine replacement therapy (NRT) work?https://www.youtube.com/embed/qfKPP36zgmQ&t=109sHow does nicotine replacement therapy (NRT) work?The health effects of smokinghttps://www.youtube.com/embed/Y2dwC2qkVZQThe health effects of smokingWithdrawal: what is happening in your bodyhttps://www.youtube.com/embed/6DniAXFc8KAWithdrawal: what is happening in your body
