Introduction:
Taking breaks while solving different sections of previous years' papers can have both advantages and disadvantages. It ultimately depends on the individual's study style and preferences. In this response, we will discuss the importance of taking breaks and the potential benefits it can bring.

Benefits of taking breaks:
1. Rest and rejuvenation: Continuous studying can lead to mental fatigue and decreased productivity. Taking breaks allows the brain to rest and recharge, increasing focus and concentration when returning to the task.

2. Enhanced retention: Research suggests that spacing out study sessions and allowing time for consolidation can improve long-term memory retention. Taking breaks between different sections of previous years' papers gives the brain an opportunity to process and solidify the information.

3. Preventing burnout: Studying for extended periods without breaks can lead to burnout and decreased motivation. By incorporating regular breaks, individuals can prevent exhaustion and maintain a consistent study routine without feeling overwhelmed.

4. Reduced stress: Continuous studying can increase stress levels, especially when faced with challenging sections of previous years' papers. Taking short breaks can help alleviate stress and provide a mental breather, leading to a more relaxed and positive mindset.

5. Improved problem-solving: Stepping away from a difficult section and taking a break can sometimes provide a fresh perspective upon returning. It allows the brain to subconsciously process the problem, potentially leading to new insights and improved problem-solving abilities.

Duration and frequency of breaks:
The duration and frequency of breaks will vary for each individual. However, it is generally recommended to take short breaks of 5-10 minutes every hour or so. This allows for a brief mental rest without disrupting the flow of studying.

What to do during breaks:
During breaks, it is important to engage in activities that promote relaxation and rejuvenation. Some suggestions include:

- Physical activity: Taking a short walk, stretching, or doing some light exercise can help increase blood flow and improve focus when returning to studying.

- Mindfulness techniques: Practicing deep breathing exercises, meditation, or other mindfulness techniques can help reduce stress and promote mental clarity.

- Refreshing activities: Engaging in activities that provide a break from studying, such as listening to music, watching a short video, or chatting with a friend, can help relax the mind and provide a mental break.

Conclusion:
In conclusion, taking breaks between solving different sections of previous years' papers can be beneficial for rest, retention, preventing burnout, reducing stress, and enhancing problem-solving abilities. However, the duration and frequency of breaks should be tailored to individual preferences and study styles. By incorporating regular breaks and engaging in rejuvenating activities, individuals can optimize their study sessions and improve overall performance.