a friend of mine started smoking,tries to force me to start smoking too,what discussion of argument would i have with this friend related with aerobic and anaerobic respiration?

Wow, I can't believe no one else has answered this! Just say that u don't want to , it's a terrible thing, as u know. Just tell them that u think they're throwing part of their life away. If they just get mad at you, they're not the kind of person you'd want to be vrienden with anyway.