'I did a 90-minute workout at 2am!': Lenny Kravitz on sex, spliffs and staying gorgeous at 60; The musician has embraced clean living, even if it sometimes means wearing leather trousers to the gym. He discusses celibacy, discipline, his new music -- and why he hasn't been in a serious relationship for nine years

Byline: Simon Hattenstone Nobody does rock star like Lenny Kravitz. He pads into the recording studio like a tranquillised tiger. It's dark in here, but he is wearing shades. He's [...]