The mind map below shows the importance of sleep and what happens to the human mind if we do not sleep for a few extra hours. As the sleep knowledge mind map suggests, if someone has not slept for 24hrs, it will create fatigue. If the person has not slept for 48hrs, it will weaken their immune system and manifest visual hallucinations. If the person has not slept for over 72hrs, the body starts to find ways to force you into unconsciousness. If the person is sleep-deprived, they will find it difficult to differentiate between reality and imagination. You can create a similar-looking mind map diagram using EdrawMax Online. The free mind map maker comes with free templates, symbols, elements, and the ability to export the diagram into multiple formats, like JPEG, JPG, PNG, PDF, or more.