Lady Macbeth tells Macbeth to hide his emotions and actions.

In Act 1, Scene 5 of "Macbeth," Macbeth and Lady Macbeth discuss the prophecy given by the witches regarding Macbeth's future as king. Lady Macbeth urges Macbeth to seize the opportunity to become king by any means necessary, including murder. This conversation ultimately sets in motion the events that lead to Duncan's assassination and Macbeth's own downfall.

Macbeth murders sleep

Tension -Apex

No it is Lady Macbeth that smears the guards with blood because Macbeth does not want to go back, so she goes and does it instead.