At 83 years old, Mick Jagger still wants to go on full-scale tours with the Rolling Stones thanks to a level of physical discipline that’s rare for his age. In an interview with Q Magazine, he explained his routine in no uncertain terms: “I work out five or six days a week, but I don’t go crazy. I alternate between the gym and dancing, then I do sprints and stuff like that. I work out to build endurance.” When preparing for a tour, he logs up to 12 kilometers of running in the mornings, either on the streets of whatever city he’s in or on a treadmill. If the weather or his schedule doesn’t allow it, he replaces that session with an hour of swimming, kickboxing, or cycling, while also incorporating ballet, yoga, and Pilates to maintain the flexibility he needs on stage. For years, that regimen was designed by Torje Eike, a Norwegian trainer who worked with Olympic athletes. The result is stamina that allows him to cover, according to his own calculations, up to 19 kilometers during a typical Stones show, without losing a single second of his signature energy.

Jeff Beck, the guitarist who admired Hendrix without any sense of rivalry. Jeff Beck was already an undisputed icon of British rock, having made his name with The Yardbirds, when he saw Jimi Hendrix perform for the first time in London in 1966. The show kicked off with a cover of “Like a Rolling Stone,” and Beck later recalled thinking, almost with embarrassment, that he should have been the one up on stage. Far from sparking rivalry, that initial encounter blossomed into a genuine friendship. Beck even gave Hendrix his first bottle slide, and the two would often jam together in New York clubs, trading songs like “Beck’s Bolero” and “Purple Haze” in sessions that ended in shared laughter. Hendrix, for his part, admired Beck’s album “Truth” so much that he played it obsessively and even borrowed one of its riffs for “In From the Storm.” For Beck, having witnessed that talent up close was an experience that stayed with him his entire life, to the point that he later stated that no other guitarist ever managed to fill him with such a sense of awe, except, decades later, Stevie Ray Vaughan.