If you told Keith Richards that he would live long enough to turn 72 today, even he would probably be surprised given how hard he partied in the 60s and 70s. So what's his secret? Might be his morning routine.

"I smoke regularly, an early morning joint," he reportedly told Mojo magazine in July 2015. And he's particular about his herbs. "Strictly Californian," he said.

He also credited cannabis for some of his success: "It's like Churchill said about alcohol, 'Believe me – I've taken a lot more out of alcohol than it's ever taken out of me!' And I kind of feel the same way about the dope and stuff. I got something out of it."

And one of his other less guilty pleasures is watching decriminalization and legalization spread across the United States: "One of the most pleasant things to watch is a map of America where it goes, green... green... green."

This ought to be a special birthday for him: Delaware officially turns green on the map as decriminalization comes into effect today.

Although The Rolling Stones have been open about their cannabis use, they rarely sang about it explicitly in their hits. But they did record a psychedelic ode to another kind of weed:

h/t BBC, Independent