11/17/2008 at 05:00 PM EST
Months after Kiefer Sutherland completed his seven-week jail sentence
for DUI, the 24
star still shivers at the thought of what he endured.
"There's no smoking," Sutherland, 41, tells Men's Vogue
in its December/January issue, which hits newsstands Nov. 25. "The lights never go out, 24/7. You can't cover anything. You can't even put your head under a blanket. All the cells have cameras in them."
Although Sutherland has resumed smoking, the knowledge that he could go 48 days without his Camels is a comforting thought.
"My drinking was not a daily thing, so it wasn't an issue. And, oddly enough, neither was the smoking," he tells the magazine, adding, "I was very glad to know that I could quit. And one day soon I will."
One thing that didn't work out, he says, was the roommate situation.
"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 says. "He got out – but not for long. He came back in pretty quick."
's new season begins Nov. 23.
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2007: Kiefer pleads no contest to DUI charge, then orders scotch