LOS ANGELES—LeBron James finished playing back-to-back road games in the Midwest on Friday, flew to Phoenix on Saturday to watch his son play, and then dropped a triple-double on the Orlando Magic back in LA on Sunday night. What’s this soon-to-be 37-year-old’s secret, other than spectacular talent and decades of hard work? “Sleep,” James said. “Sleep, and inspiration from my son and his team. … I slept last night from 12 to 8. I got up, ate breakfast, and then I went back to sleep from 8:30 to 12:30. That’s pretty good, right?” The well-rested James scored 14 of his 30 points during Los Angeles’ spectacular third quarter, and he added 11 rebounds and 10 assists while the Lakers rolled past Orlando 106-94 for their fifth victory in seven games. “He’s exemplifying finding joy through hustle,” Lakers coach Frank Vogel said. “The effort he’s playing with is inspiring our whole …