"I'm always working out," the star says in a Rolling Stone interview, "You have to prepare for what you're going to do."
The singer exercises with a personal trainer on a regular basis, raising the ante three months before a tour.
"It's really hard to do the singing at the same time," says Jagger in reference to his animated performances on stage. "I'll be doing cross-training and my trainer is going, 'Try and sing during this!'"
The band's upcoming Zip Code tour will include songs from Sticky Fingers, the Rolling Stones' 11th studio album that Examiner.com reports will be re-released later this year. Jagger told Rolling Stone that he is considering putting the entire album on the set list.
"We're playing with the idea of doing the whole album...but it's got a lot of slow songs," he told Rolling Stone. "I'm sure we'll feature some of the more usual ones. I think that'll be good."
Very little about the rock star's focus has to do with his age. Since 2012, he and the band have been touring all over the world, although playing a smaller number of shows. The band's 50th anniversary tour, 50 and Counting, boasted 30 tour dates between October 2012 and July 2013. It soon hit the top spot at Billboard.com as the highest-grossing North American tour -- ever.
In response to a question about whether he's planning for retirement, great-grandfather Jagger said, "Nah, not in the moment...I'm planning the next set of tours."