Which of the following is NOT a strategy older adults can use to delay cognitive slowdown?

• A. Physical exercise
• B. Completing crossword and Sudoku puzzles
• C. Taking classes
• D. Sleeping more

Answer: (D)

Regular engagement in activities that support brain health helps delay cognitive slowdown. Physical exercise improves blood flow to the brain and supports neuroplasticity, helping maintain cognitive function as people age. Mental stimulation from puzzles challenges memory, attention, and problem-solving, keeping these skills sharper over time. Taking classes provides exposure to new information and social interaction, both of which contribute to cognitive reserve and slow decline. Getting more sleep by itself isn’t a recognized strategy in the same way as these activities; while adequate, quality sleep is important for cognition, simply increasing total sleep time isn’t shown to delay cognitive slowdown the way regular exercise, mental challenges, and ongoing learning do.