Critical thinking exercises beneficial for UPSC preparation include brainstorming on various topics, engaging in debate sessions to challenge viewpoints, and analyzing case studies relevant to current affairs. Practicing mind mapping helps organize thoughts and outline arguments systematically. Candidates should also review articles and make a habit of summarizing them to enhance understanding and retention. It’s beneficial to solve puzzles and engage in logical reasoning exercises to sharpen analytical skills. Regular participation in discussions with peers on different perspectives can significantly enhance critical thinking abilities.