Passage 1 discusses the effects of sleep deprivation on cognitive performance, emphasizing that lack of sleep can impair attention, problem-solving abilities, and memory retention. The author highlights several studies suggesting that even one night of poor sleep can significantly hinder performance on tasks requiring complex decision-making.

Passage 2 analyzes the benefits of meditation on mental health, arguing that regular meditation practice can enhance focus, reduce anxiety, and improve emotional well-being. The author provides evidence from research indicating that mindfulness meditation can lead to structural changes in the brain that promote improved cognitive function over time.