From vials and pill bottles found in the singer's bedroom to the drugs found in his body, evidence presented in court showed Jackson struggled to sleep.
Were the effects of Jackson's insomnia visible to AEG executives who are being sued Katherine Jackson? Her attorneys called a sleep disorder expert.
Dr. Charles Czeisler showed graphics to explain how the brain depends on down time to restore the body. He has consulted for astronauts living in the space station, NBA star Shaquille O'Neal, the Rolling Stones and others - all who work and travel around the clock.
The plaintiffs assert that Jackson suffered from a massive build-up of sleep deficiency and that affected his mood, his appetite and his sense of balance. The plaintiffs claim AEG should have noted the symptoms and that Jackson suffered from chills and wrapped himself in blankets, had bouts of paranoia and had trouble grasping dance moves, according to emails to AEG executives.
The remedies Jackson sought, according to testimony, were the pain killer Demerol, anti-anxiety meds and propofol, the sedative that was administered by his doctor, Conrad Murray, which lead to Jackson's death.
The plaintiffs allege that AEG pressured Jackson to perform and threatened to withhold Murray's pay if he didn't restore Jackson's health.
AEG execs have testified that they never heard of propofol until after Jackson died and that the star had kept his nightly treatments secret.
The defense has also shown evidence to the jury that when Jackson's health problems surfaced, AEG executives notified the people who were closest to Jackson: his personal managers.