Common consequences of poor sleep include which of the following?

• A. Hindered memory, fatigue, difficulty learning, and exacerbation of illness symptoms
• B. Improved reaction time
• C. Increased appetite only
• D. Enhanced mood

Answer: (A)

Poor sleep disrupts cognitive and physical functioning, so its consequences span memory, learning, energy, and health. Sleep supports memory consolidation and the encoding of new information; when sleep is poor, memory is hindered and learning becomes more difficult. Fatigue from insufficient sleep lowers alertness and performance, making tasks feel exhausting. It also weakens immune function, so illness symptoms can be more pronounced or recovery slower. While sleep loss can increase appetite due to hormonal changes, that alone doesn’t capture the full range of effects, and mood typically worsens rather than improves. In sum, the combination of hindered memory, fatigue, difficulty learning, and exacerbation of illness symptoms reflects the typical impact of poor sleep.