These days, when the Rolling Stones say they're playing "Live", they need a disclaimer.
Check out this story from Ananova's Quirky files...
Stones tour with heart machine
The Rolling Stones have a heart machine reportedly backstage in case one collapses on their US tour.
Organisers have brought in a defibrillator, used to shock the heart back into a normal rhythm.
According to The Sun quoting US magazine Globe a source said: "With all four band members now veterans, their managers are not taking any chances."
A spokesman for the band said: "I've never seen a defibrillator backstage."
Looks like Jack Flash can't do that much jumpin anymore!
Rumour has it that if Jagger decides to body surf, a roadie will have to do it with him to carry his IV drip.