Kiefer Sutherland claims being in prison helped him quit smoking.

The '24' star - who was jailed for 48 days last December for driving under
the influence of alcohol - says although his time behind bars was gruelling,
it gave him the opportunity to kick his nicotine habit.
He said: "My drinking was not a daily thing, so it wasn't an issue. And,
oddly enough, neither was the smoking.
"I was very glad to know that I could quit. And one day soon I will."
The 41-year-old actor also revealed he endured glaring light in his cell and
could not escape the constant surveillance.
He said: "The lights never go out. You can't cover anything. You can't even
put your head under a blanket. All the cells have cameras in them."
Kiefer - who spent Christmas, New Year's Eve and his birthday, December 21,
behind bars - also says the promise of privacy was broken as soon as he
entered the facility.
He added to Men's Vogue magazine: "I was told, you know, 'You'll have your
own cell.' But I didn't for the first two or three weeks.
"I had a cell mate. He got out - but not for long. He came back in pretty
quick."