Metallica say they're "blessed" to be playing metal on stage after 30 years - but at their age, they're finding that it takes a little extra work to keep fresh after all this time.
In a Q&A session in Singapore last week, the band discussed the physical demands of touring at their age.
"It's important to keep maintenance on the road," said Kirk Hammett. "Eat well, sleep well, and just make sure the engine inside is running well. It's really important. 'Cause the last thing I wanna do is drop on stage."
Lars Ulrich described more: "We have two guys downstairs who take care of stretching us and putting us back into shape - our necks and our arms and everything. They're among the two hardest-working guys in rock and roll. So we take all that stuff really seriously. I mean, if you could see our [tour] rider, it's carrots and strange vegetables and nasty fruit juices."
Bassist Rob Trujillo says that in some ways they're fitter than ever, noting that he and surfing buddy Kirk are better at surfing than ever.
Watch the interview here:
Do you take extra steps to be fit for your performances? Or can you rock for hours on little more than a pizza? Let us know in the comments.