United Kingdom, April 23 -- Alice Cooper is able to continue rocking well into his 70s because he's been "happily married for 50 years".

The 77-year-old rock veteran believes his lengthy relationship with his wife Sheryl - who he married in 1976 - as well as his healthy lifestyle has helped him survive fame and allowed him to keep making music and touring as he approaches his 80th birthday.

He told The Times newspaper: "I am still touring full blast at the age of 77 like I always have. Although none of us thought [at the start] that we would even get past 30 years of age.

"But I haven't had a drink in 42 years, I'm not taking any drugs, I never smoked cigarettes and a lot of this has to do with being happily married for 50 years and ha...