Techniques to improve retention of information during UPSC preparation include employing active recall, spaced repetition, and summarization. Active recall activities, such as quizzing oneself, reinforce memory and understanding. Spaced repetition, using flashcards or apps, helps embed information long-term. Writing summaries or mind maps of the material facilitates comprehension and connection of ideas. Engaging in regular discussions with peers about study topics encourages active participation, solidifying retention. Additionally, maintaining a healthy lifestyle, including sufficient sleep and exercise, supports cognitive functions essential for effective learning.