Aspirants can leverage their hobbies to boost UPSC preparation by incorporating relaxation and stress relief into their study routines. Hobbies help maintain mental well-being, allowing candidates to return to their studies with renewed energy. Engaging in hobbies that require analytical or creative thinking, such as reading, writing, or playing strategy games, can also develop skills beneficial for exam preparation. Furthermore, effective time management within hobbies can enhance discipline, ensuring aspirants maintain a balanced approach while preparing for UPSC.