In Act 2 Scene 2, Macbeth [c. 1014-August 15, 1057] stabs King Duncan I [d. August 14, 1040] and his two royal chamberlains to death. He is unhinged by the bloodied corpses and crime scene. He hears warning voices of sleepless nights for the rest of his life. One such voice accuses him, 'Macbeth does murther sleep...' [Line 36].
"Banquo's dead--'a cannot come out on's grave."--Banquo's murder
"The Thane of Fife had a wife, where is she now"--Lady Macduff
"But who would have thought the old man to have had so much blood in him"--Duncan
In her sleepwalking scene, Lady Macbeth alludes to the murders of King Duncan, Banquo, and Lady Macduff. She is tormented by guilt and memories of these violent deeds.
Lady Macbeth has revealed her part and Macbeth's in a number of murders. Imagine what Macbeth would do if he knew that someone had heard that confession and knew of his guilt. The Gentlewoman puts herself in terrible danger by repeating what she has heard.
Macbeth is the first person to see King Duncan dead after he murders him in his sleep. Lady Macbeth later discovers the body as well.
A major character trait of Macbeth and Lady Macbeth is that (to a certain extent) they regret the murders of Duncan, Banquo, etc. It eventually drives them into madness
Of course, Lady Macbeth has her famous sleepwalking scene in which she not only walks but talks in her sleep. It is clear that she is disturbed and unable to sleep properly. Indeed it is a recurring theme that the Macbeths have, by committing their crime, deprived themselves of a good night's sleep. A voice tells Macbeth as he murders Duncan, "Sleep no more, Macbeth hath murdered sleep." Later he expresses envy for Duncan because, "after life's fitful fever he sleeps well", and still later Lady Macbeth tells him, "you lack the season of all natures, sleep." which suggests that Macbeth has not been sleeping well.
Yes, and she sleeptalks too.
Yes, but only after Duncan's murder. As Macbeth thought he heard, "Macbeth shall sleep no more," because he murdered sleep. He murdered Duncan in his sleep and his guilt murders his sleep. Lady Macbeth is also effected by all of this. Later in the play, she sleep walks and tries to wash the blood off of her hands, which symbolizes her unending guilt. She is reliving the nights that Duncan and Banquo were murdered and she is so paranoid that she must sleep with a candle so that she is not murdered in her sleep like Duncan. She is so guilty that she eventually commits suicide.
Lady Macbeth tells Macbeth to hide his emotions and actions.
By Act 5 she has developed the habit of sleepwalking. She has also, unfortunately, developed the habit of sleeptalking. I say unfortunate because in her sleep she gives away her involvement in all of Macbeth's murders.
Lady Macbeth exhibits the strange behaviors of sleepwalking and obsessively trying to wash imaginary bloodstains from her hands. These behaviors are manifestations of her guilt and inner turmoil over the murders she and her husband have committed.
He had murders go kill them both
Lady Macbeth exhibits peculiar behavior as she sleepwalks and tries to wash imaginary blood off her hands, revealing her internal guilt and remorse over the murders she and Macbeth committed. The gentlewoman is instructed to observe and report Lady Macbeth's actions but not to interfere.
it simply means, that when he killed the king, he also killed sleep. Macbeth now wont be able to sleep because of the guilt of killing the king