Actually, smoke if you want. At this point, it's no big secret that cigarettes are terrible for you. If you genuinely think the temporary stress relief is worth the risk, then fine.
True, but teenagers and young adults are worse at long-term risk assessment because the part of the brain responsible for that sort of thinking (the amygdala) only fully develops in your early twenties. Some young people might ignore the risk and start smoking, and then only change their minds when they're older and they've already developed an addiction.
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