There's also no drinking or doing any type of drug, unless needed per perscription when you're sick. One last thing. There is the rare occasion when someone just has shit genetics. This is a touchy topic for most people now a days because they refuse accept they might be one of those. The majority can look young for a long time when they take care of themselves. The same applies to building muscle. Every once in a while, there is someone who just can't. Now a days, people are way to sensitive and the ones that aren't blessed so to say, get all crazy defensive and start resorting to name calling and screaming bs because they want to believe they can do anything.