Michael Jackson was at his ''fighting weight'' when he died.
Kenny Ortega – the Hollywood choreographer who was working with the star on his "This Is It" London comeback shows when he tragically died in June – was helping the frail singer bulk up.
He said: "He was thin, but he was at what he liked to call his 'fighting weight.' He didn't like to eat, but we were always watching him and making sure he had plenty of protein drinks and fluids."
"We were there sliding chicken salads in front of him and making sure he was OK. But he was strong and he was getting stronger."
Kenny has also recalled the stunned atmosphere at the Staples Center in Los Angeles when news of Michael's passing hit the rehearsal space.
He added: "We were all waiting for him, gathered for a big rehearsal, and then the text messages and news started to filter in and we realized the news. It was really sad."
Documentary film "This Is It," which is made up of footage from Michael's rehearsals, is set being released in cinemas from October 28.
