He said: "If the training is scheduled at 8 a.m., LeBron will arrive at 6 a.m. every time. He will do his own stretching, abs, lifting iron, and follow the exact same training process every time."
source:7m en Chris Brickley, a well-known trainer, talked about training with James. He said that James' self-discipline is unmatched and he will come two hours in advance to prepare for warm-up work every time.